[PE] Add a fast fail for malformed PE exception directory table size

Fixes Vector35/binaryninja#1472

Author: emesare

view/pe/peview.cpp

@@ -1756,6 +1756,8 @@ bool PEView::Init()
 			if (m_dataDirs[IMAGE_DIRECTORY_ENTRY_EXCEPTION].size % entrySize)
 				throw PEFormatException("invalid table size");
 			numExceptionEntries = m_dataDirs[IMAGE_DIRECTORY_ENTRY_EXCEPTION].size / entrySize;
+			if (numExceptionEntries > (GetEnd() - GetStart()) / entrySize)
+				throw PEFormatException("too many exception entries, table size exceeds available memory range");
 
 			// This DataVariable can end up creating a large array and rendering this in LinearView currently has performance implications
 			// So instead we just create separate structures not in an array