tgsi: initialize stack allocated struct

Cc: "11.2 11.1" <mesa-stable@lists.freedesktop.org>
Signed-off-by: Chih-Wei Huang <cwhuang@linux.org.tw>
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>

src/gallium/auxiliary/tgsi/tgsi_dump.c

@@ -437,6 +437,7 @@ tgsi_dump_declaration(
    const struct tgsi_full_declaration *decl )
 {
    struct dump_ctx ctx;
+   memset(&ctx, 0, sizeof(ctx));
 
    ctx.dump_printf = dump_ctx_printf;
 
@@ -485,6 +486,7 @@ void tgsi_dump_property(
    const struct tgsi_full_property *prop )
 {
    struct dump_ctx ctx;
+   memset(&ctx, 0, sizeof(ctx));
 
    ctx.dump_printf = dump_ctx_printf;
 
@@ -516,6 +518,7 @@ tgsi_dump_immediate(
    const struct tgsi_full_immediate *imm )
 {
    struct dump_ctx ctx;
+   memset(&ctx, 0, sizeof(ctx));
 
    ctx.dump_printf = dump_ctx_printf;
 
@@ -684,6 +687,7 @@ tgsi_dump_instruction(
    uint instno )
 {
    struct dump_ctx ctx;
+   memset(&ctx, 0, sizeof(ctx));
 
    ctx.instno = instno;
    ctx.immno = instno;
@@ -724,6 +728,7 @@ void
 tgsi_dump_to_file(const struct tgsi_token *tokens, uint flags, FILE *file)
 {
    struct dump_ctx ctx;
+   memset(&ctx, 0, sizeof(ctx));
 
    init_dump_ctx(&ctx, flags);
 
@@ -782,6 +787,7 @@ tgsi_dump_str(
    size_t size)
 {
    struct str_dump_ctx ctx;
+   memset(&ctx, 0, sizeof(ctx));
 
    init_dump_ctx(&ctx.base, flags);
 
@@ -806,6 +812,7 @@ tgsi_dump_instruction_str(
    size_t size)
 {
    struct str_dump_ctx ctx;
+   memset(&ctx, 0, sizeof(ctx));
 
    ctx.base.instno = instno;
    ctx.base.immno = instno;