Do a better job handling errors on stdin

Don't end() the input stream either. It's just a read stream and there's
no end() to it. Just pause it and let the user do with it what she may.

lib/ffprobe.js

@@ -149,20 +149,21 @@ module.exports = function(proto) {
       var ffprobe = spawn(path, ['-show_streams', '-show_format'].concat(options, src));
 
       if (input.isStream) {
-        // Ignore any errors on the input stream and stdin. These seem to be thrown
-        // occasionally just before ffprobe closes
-        ffprobe.stdin.on('error', function() {});
+        // Skip errors on stdin. These get thrown when ffprobe is complete and
+        // there seems to be no way hook in and close stdin before it throws.
+        ffprobe.stdin.on('error', function(err) {
+          if (['ECONNRESET', 'EPIPE'].indexOf(err.code) >= 0) {return;}
+          throw err;
+        });
 
-        // Once ffprobe's input stream closes, we can shut down the read stream
+        // Once ffprobe's input stream closes, we need no more data from the
+        // input
         ffprobe.stdin.on('close', function() {
-            input.source.removeListener('error', callback);
-            input.source.on('error', function() {});
-            input.source.end();
+            input.source.pause();
+            input.source.unpipe(ffprobe.stdin);
         });
 
         input.source.pipe(ffprobe.stdin);
-        input.source.on('error', callback);
-        input.source.resume();
       }
 
       ffprobe.on('error', callback);