i18npool: ASAN: fix off-by-one in gendict's index2 array

The charArray always contains the size of lenArray *before* it is
extended, i.e., the last valid index.

Change-Id: Id1f4e1f2cb55a88ef5339e9d962a3adf4cde91f9
(cherry picked from commit 2589d545)

i18npool/source/breakiterator/gendict.cxx

@@ -151,8 +151,8 @@ static inline void printDataArea(FILE *dictionary_fp, FILE *source_fp, vector<sa
 #endif
         }
     }
-    lenArray.push_back( lenArrayCurr ); // store last ending pointer
     charArray[current+1] = lenArray.size();
+    lenArray.push_back( lenArrayCurr ); // store last ending pointer
 #ifndef DICT_JA_ZH_IN_DATAFILE
     fputs("\n};\n", source_fp);
 #endif