Bug fix for java case coercion helpers.

If an empty tab stop was used with either of the java case coercion
helper functions then they would blow up.  Fixed by returning an empty
string if the word passed to them is falsey.

Author: ryanpineo

UltiSnips/java.snippets

@@ -25,9 +25,11 @@ def getArgs(group):
 	return [i.split(" ") for i in word.findall(group) ]
 
 def camel(word):
+	if not word: return ''
 	return word[0].upper() + word[1:]
 
 def mixedCase(word):
+	if not word: return ''
 	return word[0].lower() + word[1:]
 
 endglobal