Guard gcc_version in a safe condition.

hunspell.gyp

Index: hunspell.gyp
===================================================================
--- hunspell.gyp	(revision 196550)
+++ hunspell.gyp	(working copy)
@@ -73,13 +73,15 @@
             '-Wno-write-strings',
           ],
         }],
-        ['gcc_version >= 48', {
-          'cflags': [
-              # affentry.hxx has NULL as default parameter for a FLAG in two
-              # places.
-              '-Wno-conversion-null',
-          ],
-        }],
+        ['os_posix==1 and OS!="mac" and OS!="ios"',

[Nico, 2013/04/26 00:35:56]

This now needs another 'conditions' child, right? Or you could just move these
conditions in front of the gcc_version check, I think and short-circuits in
python

[tfarina, 2013/04/26 00:48:07]

Done.

+          ['gcc_version >= 48', {
+             'cflags': [
+                # affentry.hxx has NULL as default parameter for a FLAG in two
+                # places.
+                '-Wno-conversion-null',
+             ],
+          }],
+        ],
         ['clang == 1', {
           'xcode_settings': {
             'WARNING_CFLAGS': [