Add logging for unexpected errors

common/src/main/java/ctbrec/recorder/PlaylistGenerator.java

@@ -68,6 +68,8 @@ public class PlaylistGenerator {
             } catch(Exception e) {
                 LOG.warn("Couldn't determine duration for {}. Skipping this file.", file.getName());
                 file.renameTo(new File(directory, file.getName()+".corrupt"));
+            } catch(Throwable t) {
+                LOG.error("Unexpected error", t);
             }
             done++;
             double percentage = (double)done / (double) total;