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guard against nullptr

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@67899 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Stefan Csomor
2011-06-09 00:31:05 +00:00
parent 395345de7d
commit 974c115dff
1 changed files with 19 additions and 16 deletions
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3
src/osx/core/bitmap.cpp
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@@ -1639,6 +1639,8 @@ bool wxMask::Create(const wxBitmap& bitmap)
unsigned char * destdatabase = (unsigned char*) m_memBuf.GetWriteBuf( size ) ; unsigned char * destdatabase = (unsigned char*) m_memBuf.GetWriteBuf( size ) ;
wxASSERT( destdatabase != NULL ) ; wxASSERT( destdatabase != NULL ) ;
if ( destdatabase )
{
memset( destdatabase , 0 , size ) ; memset( destdatabase , 0 , size ) ;
unsigned char * srcdata = (unsigned char*) bitmap.GetRawAccess() ; unsigned char * srcdata = (unsigned char*) bitmap.GetRawAccess() ;
@@ -1660,6 +1662,7 @@ bool wxMask::Create(const wxBitmap& bitmap)
*destdata++ = 0x00 ; *destdata++ = 0x00 ;
} }
} }
}
m_memBuf.UngetWriteBuf( size ) ; m_memBuf.UngetWriteBuf( size ) ;
RealizeNative() ; RealizeNative() ;