Extracted function for readability

Signed-off-by: Federico Fissore <f.fissore@arduino.cc>

Author: Federico Fissore

src/arduino.cc/builder/ctags_parser.go

@@ -180,11 +180,15 @@ func prototypeAndCodeDontMatch(tag map[string]string) bool {
 
 	code := removeSpacesAndTabs(tag[FIELD_CODE])
 	prototype := removeSpacesAndTabs(tag[KIND_PROTOTYPE])
-	prototype = prototype[0 : len(prototype)-1]
+	prototype = removeTralingSemicolon(prototype)
 
 	return strings.Index(code, prototype) == -1
 }
 
+func removeTralingSemicolon(s string) string {
+	return s[0 : len(s)-1]
+}
+
 func removeSpacesAndTabs(s string) string {
 	s = strings.Replace(s, " ", "", -1)
 	s = strings.Replace(s, "\t", "", -1)