mshtml: Handle the failure case in get_nsstyle_attr.

[Gerald Pfeifer]

---
 dlls/mshtml/htmlstyle.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/dlls/mshtml/htmlstyle.c b/dlls/mshtml/htmlstyle.c
index cd1f6b5..3e76e61 100644
--- a/dlls/mshtml/htmlstyle.c
+++ b/dlls/mshtml/htmlstyle.c
@@ -468,6 +468,8 @@ HRESULT get_nsstyle_attr(nsIDOMCSSStyleDeclaration *nsstyle, styleid_t sid, BSTR
 
     nsAString_GetData(&str_value, &value);
     hres = nsstyle_to_bstr(value, flags, p);
+    if( FAILED(hres) )
+        return hres;
     nsAString_Finish(&str_value);
 
     TRACE("%s -> %s\n", debugstr_w(style_tbl[sid].name), debugstr_w(*p));
-- 
1.7.3.5