wined3d: Get rid of a few stack buffers.

dlls/wined3d/baseshader.c

@@ -52,17 +52,12 @@ void shader_buffer_free(struct SHADER_BUFFER *buffer)
     HeapFree(GetProcessHeap(), 0, buffer->buffer);
 }
 
-int shader_addline(
-    SHADER_BUFFER* buffer,  
-    const char *format, ...) {
-
+int shader_vaddline(SHADER_BUFFER* buffer, const char *format, va_list args)
+{
     char* base = buffer->buffer + buffer->bsize;
     int rc;
 
-    va_list args;
-    va_start(args, format);
     rc = vsnprintf(base, SHADER_PGMSIZE - 1 - buffer->bsize, format, args);
-    va_end(args);
 
     if (rc < 0 ||                                   /* C89 */ 
         rc > SHADER_PGMSIZE - 1 - buffer->bsize) {  /* C99 */
@@ -88,6 +83,18 @@ int shader_addline(
     return 0;
 }
 
+int shader_addline(SHADER_BUFFER* buffer, const char *format, ...)
+{
+    int ret;
+    va_list args;
+
+    va_start(args, format);
+    ret = shader_vaddline(buffer, format, args);
+    va_end(args);
+
+    return ret;
+}
+
 void shader_init(struct IWineD3DBaseShaderClass *shader,
         IWineD3DDevice *device, const SHADER_OPCODE *instruction_table)
 {

dlls/wined3d/wined3d_private.h

@@ -2219,6 +2219,7 @@ typedef struct SHADER_PARSE_STATE {
 extern int shader_addline(
     SHADER_BUFFER* buffer,
     const char* fmt, ...) PRINTF_ATTR(2,3);
+int shader_vaddline(SHADER_BUFFER *buffer, const char *fmt, va_list args);
 
 const SHADER_OPCODE *shader_get_opcode(const SHADER_OPCODE *shader_ins, DWORD shader_version, DWORD code);