CID 930: Fix memory leak in error case.

Note that this file has a completely different coding style, violating ours for
consistency until the whole file can be cleaned up.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27480 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/servers/midi/PortDrivers.cpp

@@ -100,6 +100,10 @@ int32 MidiPortProducer::GetData()
 		if (read(fd, &next, 1) != 1)
 		{
 			perror("Error reading data from driver");
+			if (haveSysEx)
+			{
+				free(sysexBuf);
+			}
 			return B_ERROR;
 		}