update PG IDs fields

src/popins2_merge_and_set_mate.h

@@ -103,10 +103,12 @@ inline void readRecordAndCorrectRIds(BamAlignmentRecord & record, BamFileIn & st
 inline CharString iterSuffix(const CharString &PG_ID, const std::unordered_set<char*> &ids, const unsigned i){
     CharString ret;
     append(ret, PG_ID);
-    CharString suf = ".mH";
+    CharString inf = ".mH";
+    append(ret, inf);
+    char buffer[32];
+    itoa(i, buffer, 10);  // unsigned, char*, numerical base
+    CharString suf = buffer;
     append(ret, suf);
-    CharString iter = i;
-    append(ret, iter);
 
     if (ids.find(toCString(ret)) == ids.end())
         return ret;