Fix: prevent crash when stdoutRing or stderrRing is undefined by @decompi (#3)

Co-authored-by: decompi <ytstickmanitz@gmail.com>

Author: Jonham

lib/processor.js

@@ -467,7 +467,11 @@ module.exports = function(proto) {
             self.processTimer = setTimeout(function() {
               var msg = 'process ran into a timeout (' + self.options.timeout + 's)';
 
-              emitEnd(new Error(msg), stdoutRing.get(), stderrRing.get());
+              if (!stdoutRing || !stderrRing) { 
+                self.logger?.warn?.('stdoutRing or stderrRing is undefined during timeout.');
+              } 
+              
+              emitEnd( new Error(msg), stdoutRing?.get?.() ?? null, stderrRing?.get?.() ?? null );
               ffmpegProc.kill();
             }, self.options.timeout * 1000);
           }
@@ -495,7 +499,10 @@ module.exports = function(proto) {
               self.logger.debug('Output stream error, killing ffmpeg process');
               var reportingErr = new Error('Output stream error: ' + err.message);
               reportingErr.outputStreamError = err;
-              emitEnd(reportingErr, stdoutRing.get(), stderrRing.get());
+              if (!stdoutRing || !stderrRing) { 
+                self.logger?.warn?.('stdoutRing or stderrRing is undefined during output stream error.'); 
+              } 
+              emitEnd( reportingErr, stdoutRing?.get?.() ?? null, stderrRing?.get?.() ?? null );
               ffmpegProc.kill('SIGKILL');
             });
           }
@@ -540,7 +547,11 @@ module.exports = function(proto) {
               err.message += ': ' + utils.extractError(stderrRing.get());
             }
 
-            emitEnd(err, stdoutRing.get(), stderrRing.get());
+            if(!stdoutRing || !stderrRing) {
+              self.logger?.warn?.('stdoutRing or stderrRing is undefined – FFmpeg may have exited early.')
+            }
+            
+            emitEnd( err, stdoutRing?.get?.() ?? null, stderrRing?.get?.() ?? null );
           } else {
             // Find out which outputs need flv metadata
             var flvmeta = self._outputs.filter(function(output) {