Merge branch 'autogen_p' into release-3.9

Source/cmQtAutoGenerators.cxx

@@ -1160,7 +1160,6 @@ void cmQtAutoGenerators::SearchHeadersForSourceFile(
       if (!this->UicSkip(absFilename) && !this->UicSkip(headerName)) {
         uicHeaderFiles.insert(headerName);
       }
-      break;
     }
   }
 }