One issue with LTE cell scanner?

I found that librtlsdr in github 003bd51167d9680e9721c7296323fdffe4be5a09 can't work with LTE-Cell-Scanner<https://github.com/Evrytania/LTE-Cell-Scanner>5fa3df… in github. But librtlsdr release 0.5.2 2d0eaa898d2d4e271aed87ae3849a80ac12cf76c is OK. The 'can't work' means: LTE-Cell-Scanner show seg-fault/core-dump when it checks the second frequency point after finishes the first frequency point. A debug tracing shows that the crash is at rtlsdr_set_center_freq(). BR Ryan.