Prepping to allow textures to have different render modes/types. Prepping for freetype support

src/dawntools/util/DawnTool.cpp

@@ -51,6 +51,7 @@ int32_t DawnTool::exec(const int32_t argc, const char *argv[]) {
     // Get prefix and val and store
     auto prefix = flag.substr(0, equalPos);
     auto val = flag.substr(equalPos + 1);
+    if(val.size() == 0) continue;
     flags[prefix] = val;
   }