I _assume_ this is correct... Need a review from brynary since this was his change

[git-p4: depot-paths = "//src/ruby_parser/dev/": change = 6744]

Author: zenspider

lib/ruby_lexer.rb

@@ -1266,7 +1266,7 @@ def process_token(command_state)
 
         if colon && src.peek(1) != ":"
           src.unscan
-          self.lex_state == :expr_beg
+          self.lex_state = :expr_beg
           src.scan(/:/)
           self.yacc_value = [token, src.lineno]
           return :tLABEL