gdiplus: Check GetMetadataFormat() return value (Coverity)

[Nikolay Sivov]

---
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From 978ff3a5df29561c08360cfc12cccfc4cde581ff Mon Sep 17 00:00:00 2001
From: Nikolay Sivov <nsivov at codeweavers.com>
Date: Sat, 27 Jun 2015 14:29:37 +0300
Subject: [PATCH] gdiplus: Check GetMetadataFormat() return value (Coverity)

---
 dlls/gdiplus/image.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/dlls/gdiplus/image.c b/dlls/gdiplus/image.c
index 351c5b3..73f2f74 100644
--- a/dlls/gdiplus/image.c
+++ b/dlls/gdiplus/image.c
@@ -3058,8 +3058,8 @@ static BOOL get_bool_property(IWICMetadataReader *reader, const GUID *guid, cons
     PROPVARIANT id, value;
     BOOL ret = FALSE;
 
-    IWICMetadataReader_GetMetadataFormat(reader, &format);
-    if (!IsEqualGUID(&format, guid)) return FALSE;
+    hr = IWICMetadataReader_GetMetadataFormat(reader, &format);
+    if (FAILED(hr) || !IsEqualGUID(&format, guid)) return FALSE;
 
     PropVariantInit(&id);
     PropVariantInit(&value);
@@ -3085,8 +3085,8 @@ static PropertyItem *get_property(IWICMetadataReader *reader, const GUID *guid,
     PROPVARIANT id, value;
     PropertyItem *item = NULL;
 
-    IWICMetadataReader_GetMetadataFormat(reader, &format);
-    if (!IsEqualGUID(&format, guid)) return NULL;
+    hr = IWICMetadataReader_GetMetadataFormat(reader, &format);
+    if (FAILED(hr) || !IsEqualGUID(&format, guid)) return NULL;
 
     PropVariantInit(&id);
     PropVariantInit(&value);
-- 
2.1.4