parseSrt(): allow multi-line empty lines between blocks, and test

Author: martinlindhe

srt.go

@@ -34,7 +34,7 @@ func parseSrt(s string) []caption {
 
 		seq := strings.Trim(lines[i], "\r ")
 		if seq == "" {
-			break
+			continue
 		}
 
 		_, err := strconv.Atoi(seq)

srt_test.go

@@ -33,6 +33,7 @@ func TestParseSrt(t *testing.T) {
 		"00:00:10,000 --> 00:00:11,000\n" +
 		"Subtitles By MrCool\n" +
 		"\n" +
+		"\n" + // NOTE make sure we allow slightly sloppy input
 		"3\n" +
 		"00:01:09,630 --> 00:01:11,005\n" +
 		"No ninja!\n"