pg_test_timing: Lame hack to work around compiler warning.

Fujii Masao, plus a comment by me.  While I'm at it, correctly tabify
this chunk of code.

contrib/pg_test_timing/pg_test_timing.c

@@ -107,6 +107,7 @@ test_timing(int32 duration)
 	instr_time start_time, end_time, temp;
 
 	static int64 histogram[32];
+	char	buf[100];
 
 	total_time = duration > 0 ? duration * 1000000 : 0;
 
@@ -155,7 +156,9 @@ test_timing(int32 duration)
 		if (found || histogram[i])
 		{
 			found = 1;
-            printf("%9ld: %10ld %8.5f%%\n", 1l << i, histogram[i],
+			/* lame hack to work around INT64_FORMAT deficiencies */
+			snprintf(buf, sizeof(buf), INT64_FORMAT, histogram[i]);
+			printf("%9ld: %10s %8.5f%%\n", 1l << i, buf,
 				   (double) histogram[i] * 100 / loop_count);
 		}
 	}