Renamed method.

MicroDexed.ino

@@ -1626,7 +1626,7 @@ void handleSystemExclusive(byte* sysex, unsigned int len)
     Serial.println();
 #endif
 
-    sysex_return = MicroDexed[instance_id]->handleSystemExclusive(sysex, len);
+    sysex_return = MicroDexed[instance_id]->checkSystemExclusive(sysex, len);
 #ifdef DEBUG
     Serial.print(F("SYSEX handler return value:"));
     Serial.print(sysex_return, DEC);