FS#1646 close fp in error case to avoid resource leak

src/repository.cpp

@@ -256,6 +256,7 @@ Repository::initFromCache( const string& cacheFile )
     if ( fgets( input, length, fp ) ) {
         line = stripWhiteSpace( input );
         if ( line != CACHE_VERSION ) {
+            close( fp );
             return FORMAT_ERR;
         }
     }