mac syntax error fix.

Author: gallickgunner

FileBrowser/ImGuiFileBrowser.cpp

@@ -424,7 +424,7 @@ namespace imgui_addons
         ImGui::SetCursorPosY(pw_content_sz.y - frame_height_spacing * 2.0f);
 
         //Render Input Text Bar label
-        ImGui::Text(label.c_str());
+        ImGui::Text("%s", label.c_str());
         ImGui::SameLine();
 
         //Render Input Text Bar

FileBrowser/ImGuiFileBrowser.h

@@ -114,7 +114,7 @@ namespace imgui_addons
             std::string valid_types;
             std::vector<const Info*> filtered_dirs; // Note: We don't need to call delete. It's just for storing filtered items from subdirs and subfiles so we don't use PassFilter every frame.
             std::vector<const Info*> filtered_files;
-            std::vector<std::reference_wrapper<std::string>> inputcb_filter_files;
+            std::vector< std::reference_wrapper<std::string> > inputcb_filter_files;
     };
 }