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commit ee4a389872d86b619c677888da8f13f1f6c54472
Author: Adrian Johnson <ajohnson@redneon.com>
Date:   Mon Oct 20 22:32:30 2014 +1030

    PDFDoc: fix crash when getPage() returns NULL
    
    Bug 85235

diff --git a/poppler/PDFDoc.cc b/poppler/PDFDoc.cc
index d1b5d7b..8fd5e18 100644
--- a/poppler/PDFDoc.cc
+++ b/poppler/PDFDoc.cc
@@ -626,7 +626,7 @@ int PDFDoc::savePageAs(GooString *name, int pageNo)
   int keyLength;
   xref->getEncryptionParameters(&fileKey, &encAlgorithm, &keyLength);
 
-  if (pageNo < 1 || pageNo > getNumPages()) {
+  if (pageNo < 1 || pageNo > getNumPages() || !getCatalog()->getPage(pageNo)) {
     error(errInternal, -1, "Illegal pageNo: {0:d}({1:d})", pageNo, getNumPages() );
     return errOpenFile;
   }