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fix null-pointer crash

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@32047 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Ryan Norton 2005-02-14 23:00:27 +00:00
parent da9d044c68
commit 2ff29ddf87
1 changed files with 8 additions and 4 deletions
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12
src/mac/corefoundation/hid.cpp
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@ -152,15 +152,19 @@ USB Product Name
//Get [product] name
m_szProductName = wxMacCFStringHolder( (CFStringRef) CFDictionaryGetValue(pDictionary, CFSTR(kIOHIDProductKey)), false ).AsString();
CFNumberGetValue(
(CFNumberRef) CFDictionaryGetValue(pDictionary, CFSTR(kIOHIDProductIDKey)),
CFNumberRef nref = (CFNumberRef) CFDictionaryGetValue(pDictionary, CFSTR(kIOHIDProductIDKey));
if (nref)
CFNumberGetValue(
nref,
kCFNumberIntType,
&m_nProductId
);
nref = (CFNumberRef) CFDictionaryGetValue(pDictionary, CFSTR(kIOHIDVendorIDKey));
if (nref)
CFNumberGetValue(
(CFNumberRef) CFDictionaryGetValue(pDictionary, CFSTR(kIOHIDVendorIDKey)),
nref,
kCFNumberIntType,
&m_nManufacturerId
);