Update EXTMaybe.m

Remove semicolons before methods bodies - they are useless and already ignored by compiler.
Update EXTMultimethod.m

Remove semicolon before initWithName:implementation:parameterCount:parameterClasses: method body - it's useless and already ignored by compiler.
Merge pull request #37 from ikashkuta/unnecessary-semicolons

Unnecessary semicolons before methods bodies
Merge pull request #1 from jspahrsummers/master

合并更新