Fix some bugs in class_getInstanceMethod()
Fix some bugs in class_getInstanceMethod()



crystax/android-vendor-libobjc2,davidchisnall/libobjc2,ngrewe/libobjc2,gnustep/libobjc2,crystax/android-vendor-libobjc2,darlinghq/darling-libobjc2,davidchisnall/libobjc2,gnustep/libobjc2,ngrewe/libobjc2,darlinghq/darling-libobjc2