util: Don't limit debug_printf message length on unices.

src/gallium/auxiliary/util/u_debug.c

@@ -47,14 +47,19 @@
 
 void _debug_vprintf(const char *format, va_list ap)
 {
+#if defined(PIPE_OS_WINDOWS) || defined(PIPE_OS_EMBEDDED)
    /* We buffer until we find a newline. */
    static char buf[4096] = {'\0'};
    size_t len = strlen(buf);
    int ret = util_vsnprintf(buf + len, sizeof(buf) - len, format, ap);
    if(ret > (int)(sizeof(buf) - len - 1) || util_strchr(buf + len, '\n')) {
-      os_log_message(buf);
+      os_log_message(buf * h);
       buf[0] = '\0';
    }
+#else
+   /* Just print as-is to stderr */
+   vfprintf(stderr, format, ap);
+#endif
 }