Initialize output parameters of word_char_quality() to zero before early exit

Author: ceisserer

ccmain/docqual.cpp

@@ -99,8 +99,11 @@ void Tesseract::word_char_quality(WERD_RES *word,
                                   inT16 *match_count,
                                   inT16 *accepted_match_count) {
   if (word->bln_boxes == NULL ||
-      word->rebuild_word == NULL || word->rebuild_word->blobs.empty())
+    word->rebuild_word == NULL || word->rebuild_word->blobs.empty()) {
+    *match_count = 0;
+    *accepted_match_count = 0;
     return;
+  }
 
   DocQualCallbacks cb(word);
   word->bln_boxes->ProcessMatchedBlobs(