Fix various warnings

code/renderergl2/tr_model_iqm.c

@@ -974,7 +974,7 @@ qboolean R_LoadIQM( model_t *mod, void *buffer, int filesize, const char *mod_na
 		for (i = 0; i < iqmData->num_surfaces; i++, vaoSurf++, surf++)
 		{
 			uint32_t offset_xyz, offset_st, offset_normal, offset_tangent;
-			uint32_t offset_blendindexes, offset_blendweights, stride;
+			uint32_t offset_blendindexes = 0, offset_blendweights = 0, stride;
 			uint32_t dataSize, dataOfs;
 			uint8_t *data;
 			glIndex_t indexes[SHADER_MAX_INDEXES];