Potential null-dereference in libblifparse/blif_parser.gen.cpp

[mithro]

See error below;

/home/tansell/github/verilog-to-routing/vtr-verilog-to-routing/build/libs/EXTERNAL/libblifparse/blif_parser.gen.cpp: In member function ‘yysyntax_error_’:
/home/tansell/github/verilog-to-routing/vtr-verilog-to-routing/build/libs/EXTERNAL/libblifparse/blif_parser.gen.cpp:1192:38: warning: potential null pointer dereference [-Wnull-dereference]
     for (char const* yyp = yyformat; *yyp; ++yyp)

This seems to be the same issue as verilog-to-routing/libsdcparse#1