Fix renderergl1 warnings

code/renderergl1/tr_shade_calc.c

@@ -771,7 +771,7 @@ void RB_CalcModulateAlphasByFog( unsigned char *colors ) {
 */
 void RB_CalcModulateRGBAsByFog( unsigned char *colors ) {
 	int		i;
-	float	texCoords[SHADER_MAX_VERTEXES][2];
+	float	texCoords[SHADER_MAX_VERTEXES][2] = {{0.0f}};
 
 	// calculate texcoords so we can derive density
 	// this is not wasted, because it would only have