BUG correction: trap when idx theme out of bounds when not found in menumode

Signed-off-by: Vincent-FK <vincent.buso@funkey-project.com>

RetroFE/Source/Database/Configuration.cpp

@@ -268,6 +268,7 @@ bool Configuration::importCurrentLayout(std::string folder, std::string file, bo
 		break;
 	    }
 	    else{
+	        index = 0;
 	    }
         }
     }