closes[t:2642] fix a mem leak in the brtloader found with the cleanup test

git-svn-id: file:///svn/toku/tokudb@20627 c7de825b-a66e-492c-adef-691d508d4ae1

newbrt/brtloader.c

@@ -1744,7 +1744,6 @@ int merge_files (struct merge_fileset *fs,
 	    }
 	    if (result==0 && !to_queue) {
 		result = extend_fileset(bl, &next_file_set,  &merged_data);
-		if (result!=0) { break; }
 	    }
 
 	    if (result==0) {

newbrt/tests/brtloader-test-extractor.c

@@ -196,7 +196,7 @@ static char *merge(char **tempfiles, int ntempfiles, const char *testdir) {
         // write min
         write_row(mergef, &f[mini].key, &f[mini].val);
 
-        // refresh i
+        // refresh mini
         if (read_row(f[mini].f, &f[mini].key, &f[mini].val) != 0)
             f[mini].row_valid = FALSE;
     }