[LyX/master] Drop runtime support for OS X 10.5 NSSpellChecker

[Stephan Witt]

commit 54b0fa330e997c67dc11d65fc41c4f39d23669ae
Author: Stephan Witt <sw...@lyx.org>
Date:   Tue Dec 23 18:19:27 2014 +0100

    Drop runtime support for OS X 10.5 NSSpellChecker

diff --git a/src/support/AppleSpeller.m b/src/support/AppleSpeller.m
index 3e9a2f8..08e3f59 100644
--- a/src/support/AppleSpeller.m
+++ b/src/support/AppleSpeller.m
@@ -162,16 +162,11 @@ size_t AppleSpeller_makeSuggestion(AppleSpeller speller, 
const char * word, cons
        // Mac OS X 10.6 only
        NSInteger slen = [word_ length];
        NSRange range = { 0, slen };
-       
-       if ([NSSpellChecker 
instancesRespondToSelector:@selector(guessesForWordRange:)]) {
-               result = [speller->checker guessesForWordRange:range
-                       inString:word_
-                       language:lang_
-                       inSpellDocumentWithTag:speller->doctag];
-       } else {
-               [speller->checker setLanguage:lang_];
-               result = [speller->checker guessesForWord:word_];
-       }
+
+       result = [speller->checker guessesForWordRange:range
+               inString:word_
+               language:lang_
+               inSpellDocumentWithTag:speller->doctag];
 #else
        [speller->checker setLanguage:lang_];
        result = [speller->checker guessesForWord:word_];