Handle empty lines in the 'TimingsAndSettings' state in the WebVTTParser

Source/core/html/track/WebVTTParser.cpp

Index: Source/core/html/track/WebVTTParser.cpp
diff --git a/Source/core/html/track/WebVTTParser.cpp b/Source/core/html/track/WebVTTParser.cpp
index 32d0bbe90e08fc1bee88d55c93e3cb4a9f67f03c..c0b9283c4b42fe682985135150996462fe5e2d3a 100644
--- a/Source/core/html/track/WebVTTParser.cpp
+++ b/Source/core/html/track/WebVTTParser.cpp
@@ -180,6 +180,11 @@ void WebVTTParser::parseBytes(const char* data, unsigned length)
             break;
 
         case TimingsAndSettings:
+            if (line.isEmpty()) {
+                m_state = Id;
+                break;
+            }
+
             // 40 - Collect cue timings and settings.
             m_state = collectTimingsAndSettings(line);
             break;