cmake_automoc_parser: Fix issue found by CodeChecker

Fix exp63-cpp by assigning fresh values to mocEntries and mocIncludes to
get them out of the moved-from state.

Change-Id: I9ad36c0ebd922bc6a0c9e61c15be02cb987c1edb
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>

src/tools/cmake_automoc_parser/main.cpp

@@ -168,6 +168,8 @@ static bool readParseCache(ParseCacheMap &entries, const QString &parseCacheFile
                 entries.insert(source,
                                ParseCacheEntry { std::move(mocEntries), std::move(mocIncludes) });
                 source.clear();
+                mocEntries = {};
+                mocIncludes = {};
                 mmc_key_found = false;
             }
             source = line;