Fix searching for repeated characters in files.

Searching for aaaa in aaaaaaaa would give 5 results instead of 2 in case
of non-regexp search.

Task-number: QTCREATORBUG-7883
Change-Id: I5936090b3eef5e68405201fe63d02bf0dd2469d5
Reviewed-by: David Schulz <david.schulz@digia.com>

src/libs/utils/filesearch.cpp

@@ -173,6 +173,7 @@ void runFileSearch(QFutureInterface<FileSearchResultList> &future,
                         results << FileSearchResult(s, lineNr, resultItemText,
                                                       regionPtr - chunkPtr, termLength,
                                                       QStringList());
+                        regionPtr += termLength - 1; // another +1 done by for-loop
                         ++numMatches;
                     }
                 }