rclaudio: catch exception when parsing bad date, set date to the epoch

src/filters/rclaudio

@@ -255,6 +255,7 @@ class AudioTagExtractor(RclBaseHandler):
     # was wrong, because dmtime is the unix integer time. We have
     # removed the alias, and set dmtime from the parsed date value.
     def parsedate(self, dt):
+        try:
             dt = dt.decode('utf-8', errors='ignore')
             if len(dt) > 10:
                 dt = dt[0:10]
@@ -267,6 +268,8 @@ class AudioTagExtractor(RclBaseHandler):
                 pdt = datetime.datetime.strptime(dt, "%Y-%m-%d")
             val = time.mktime(pdt.timetuple())
             return "%d" % val
+        except:
+            return 0
 
 
     def html_text(self, filename):