Fix valgrind bot errors introduced in f84722e4777.

NOTREECHECKS=true
NOTRY=true
R=robertphillips@google.com

Author: halcanary@google.com

Review URL: https://codereview.chromium.org/179843003

git-svn-id: http://skia.googlecode.com/svn/trunk@13580 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/gyp/zlib.gyp b/gyp/zlib.gyp
index 6539471..78adc34b 100644
--- a/gyp/zlib.gyp
+++ b/gyp/zlib.gyp
@@ -19,7 +19,7 @@
             ],
             'direct_dependent_settings': {
               'defines': [
-                'SK_ZLIB_INCLUDE=<zlib.h>',
+                'SK_ZLIB_INCLUDE="zlib.h"',
               ],
               'include_dirs': [
                 '../third_party/externals/zlib',
@@ -52,7 +52,7 @@
                   ],
                 }, {
                   'defines': [
-                    'SK_ZLIB_INCLUDE=<zlib.h>',
+                    'SK_SYSTEM_ZLIB=1',
                   ],
                 }]
               ],