CPdbCache::SearchSymStorageDir() infinite loop

[ch1rh0]

If TryPdbFile() returns false, the while block below will enter infinite loop.

    // Try candidates, prefer those ones having the smallest age difference
    std::map<int, std::wstring>::iterator it = asCandidates.begin();
    while(it!=asCandidates.end())
    {
        // Try to open the file
        sPdbFileName = it->second;
        sPdbFileName += slash;
        sPdbFileName += sPdbName;
        if(TryPdbFile(sPdbFileName, sPeFileName, sGUIDnAge, ppPdbReader, ppPeReader, pnEntry, true, sErrorMsg, bExactMatchBuildAge))
        {
            return true;
        }
    }

[Daryl Fortney]

missing iterator increment.