Add test case for formatting function inline with class definition, fix wrong formatting

Close #42

Author: NathanLovato

tests/expected/class_inner.gd

@@ -43,3 +43,8 @@ class A:
 class B:
 	extends A
 	var test = 2
+
+
+class C:
+	func test(x):
+		print(x)

tests/input/class_inner.gd

@@ -28,3 +28,6 @@ class A:
 class B:
 	extends A
 	var test = 2
+
+class C:func test(x):
+	print(x)