Fixed bugs with reading pdf files.

PdfReader/Src/JBIG2Stream.cpp

@@ -1646,7 +1646,7 @@ namespace PdfReader
 
 			MemUtilsFree(punRefSegs);
 
-			if (m_pCurStream->GetPos() - unDataStartPos != unSegLength)
+			if (unSegLength != 0xFFFFFFFF && m_pCurStream->GetPos() - unDataStartPos != unSegLength)
 				m_pCurStream->SetPos(unDataStartPos + unSegLength);
 		}
 

PdfReader/Src/Stream.cpp

@@ -803,7 +803,7 @@ namespace PdfReader
 		if (!bLimited || unStart + unLength > m_unStart + m_unLength)
 		{
 			unNewLength = m_unStart + m_unLength - unStart;
-            if (unStart >= m_unLength)
+			if (unStart >= m_unStart + m_unLength)
                 unNewLength = 0;
 		}
 		else