Fixed function call

src/main/java/chocopy/pa3/CodeGenImpl.java

@@ -323,7 +323,7 @@ public class CodeGenImpl extends CodeGenBase
 	        		}
 	        		
 	        		backend.emitADDI(SP, SP, -spaceRequiredForArgs, "Set SP to last argument.");
-	        		backend.emitJAL(new Label("$"+functionId.name), "Invoke function: " + functionId.name);
+	        		backend.emitJAL(calleeFunctionInfo.getCodeLabel(), "Invoke function: " + functionId.name);
 	        		backend.emitADDI(SP, SP, spaceRequiredForArgs, "Set SP to stack frame top.");
             }
             return A0;