vl: Fix trivial sign compare warnings

v2: add whitepace fixes

Signed-off-by: Jan Vesely <jan.vesely@rutgers.edu>
Acked-by: Jose Fonseca <jfonseca@vmware.com>
[Emil Velikov: squash a few more whitespace issues]
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>

src/gallium/auxiliary/vl/vl_deint_filter.c

@@ -447,7 +447,8 @@ vl_deint_filter_render(struct vl_deint_filter *filter,
    struct pipe_sampler_view *sampler_views[4];
    struct pipe_surface **dst_surfaces;
    const unsigned *plane_order;
-   int i, j;
+   int i;
+   unsigned j;
 
    assert(filter && prevprev && prev && cur && next && field <= 1);
 

src/gallium/auxiliary/vl/vl_idct.c

@@ -321,13 +321,11 @@ static void *
 create_stage1_frag_shader(struct vl_idct *idct)
 {
    struct ureg_program *shader;
-
    struct ureg_src l_addr[2], r_addr[2];
-
    struct ureg_dst l[4][2], r[2];
    struct ureg_dst *fragment;
-
-   int i, j;
+   unsigned i;
+   int j;
 
    shader = ureg_create(PIPE_SHADER_FRAGMENT);
    if (!shader)

src/gallium/auxiliary/vl/vl_matrix_filter.c

@@ -85,7 +85,7 @@ create_frag_shader(struct vl_matrix_filter *filter, unsigned num_offsets,
    struct ureg_dst t_sum;
    struct ureg_dst o_fragment;
    bool first;
-   int i;
+   unsigned i;
 
    shader = ureg_create(PIPE_SHADER_FRAGMENT);
    if (!shader) {

src/gallium/auxiliary/vl/vl_median_filter.c

@@ -84,7 +84,7 @@ create_frag_shader(struct vl_median_filter *filter,
    struct ureg_dst *t_array = MALLOC(sizeof(struct ureg_dst) * num_offsets);
    struct ureg_dst o_fragment;
    const unsigned median = num_offsets >> 1;
-   int i, j;
+   unsigned i, j;
 
    assert(num_offsets & 1); /* we need an odd number of offsets */
    if (!(num_offsets & 1)) { /* yeah, we REALLY need an odd number of offsets!!! */
@@ -158,7 +158,8 @@ static void
 generate_offsets(enum vl_median_filter_shape shape, unsigned size,
                  struct vertex2f **offsets, unsigned *num_offsets)
 {
-   int i = 0, half_size;
+   unsigned i = 0;
+   int half_size;
    struct vertex2f v;
 
    assert(offsets && num_offsets);

src/gallium/auxiliary/vl/vl_mpeg12_bitstream.c

@@ -583,12 +583,12 @@ init_dct_coeff_table(struct dct_coeff *dst, const struct dct_coeff_compressed *s
          break;
       }
 
-      for(i=0; i<(1 << (17 - coeff.length)); ++i)
+      for(i = 0; i < (1u << (17 - coeff.length)); ++i)
          dst[src->bitcode << 1 | i] = coeff;
 
       if (has_sign) {
 	 coeff.level = -coeff.level;
-         for(; i<(1 << (18 - coeff.length)); ++i)
+         for(; i < (1u << (18 - coeff.length)); ++i)
             dst[src->bitcode << 1 | i] = coeff;
       }
    }

src/gallium/auxiliary/vl/vl_vlc.h

@@ -79,7 +79,7 @@ vl_vlc_init_table(struct vl_vlc_entry *dst, unsigned dst_size, const struct vl_v
    }
 
    for(; src_size > 0; --src_size, ++src) {
-      for(i=0; i<(1 << (bits - src->entry.length)); ++i)
+      for(i = 0; i < (1u << (bits - src->entry.length)); ++i)
          dst[src->bitcode >> (16 - bits) | i] = src->entry;
    }
 }
@@ -293,7 +293,7 @@ vl_vlc_search_byte(struct vl_vlc *vlc, unsigned num_bits, uint8_t value)
 {
    /* make sure we are on a byte boundary */
    assert((vl_vlc_valid_bits(vlc) % 8) == 0);
-   assert(num_bits == ~0 || (num_bits % 8) == 0);
+   assert(num_bits == ~0u || (num_bits % 8) == 0);
 
    /* deplete the bit buffer */
    while (vl_vlc_valid_bits(vlc) > 0) {
@@ -305,7 +305,7 @@ vl_vlc_search_byte(struct vl_vlc *vlc, unsigned num_bits, uint8_t value)
 
       vl_vlc_eatbits(vlc, 8);
 
-      if (num_bits != ~0) {
+      if (num_bits != ~0u) {
          num_bits -= 8;
          if (num_bits == 0)
             return FALSE;
@@ -332,7 +332,7 @@ vl_vlc_search_byte(struct vl_vlc *vlc, unsigned num_bits, uint8_t value)
       }
 
       ++vlc->data;
-      if (num_bits != ~0) {
+      if (num_bits != ~0u) {
          num_bits -= 8;
          if (num_bits == 0) {
             vl_vlc_align_data_ptr(vlc);

src/gallium/auxiliary/vl/vl_zscan.c

@@ -99,15 +99,12 @@ static void *
 create_vert_shader(struct vl_zscan *zscan)
 {
    struct ureg_program *shader;
-
    struct ureg_src scale;
    struct ureg_src vrect, vpos, block_num;
-
    struct ureg_dst tmp;
    struct ureg_dst o_vpos;
    struct ureg_dst *o_vtex;
-
-   signed i;
+   unsigned i;
 
    shader = ureg_create(PIPE_SHADER_VERTEX);
    if (!shader)