pwr: fix reading at [-1] in readwbl

component/proviewR/buildout.cfg

@@ -328,6 +328,7 @@ configure-command =
   sed -i "s#char source_dir\[200\]#char source_dir\[400\]#" ${:compile-dir}/src/exe/co_convert/src/*
   sed -i "s#char directory\[80\]#char directory\[400\]#" ${:compile-dir}/src/exe/co_convert/src/*
   sed -i "s#char filename\[120\]#char filename\[400\]#" ${:compile-dir}/src/exe/co_convert/src/*
+  sed -i "s#if (str\[strlen(str) - 1\] == '|')#if (strlen(str) \&\& str\[strlen(str) - 1\] == '|')#" ${:compile-dir}/src/exe/co_convert/src/cnv_readwbl.cpp
   sed -i 's#@_") \&\&#@_ --trace -w") \&\&#' ${:compile-dir}/src/tools/pwre/src/pwre.pl
   #sed -i "s#pwre build_all_modules \$gui#pwre build -v all \$gui#" ${:compile-dir}/build.sh
   sed -i "s#gui=\"gtk\"#gui=\"qt\"#" ${:compile-dir}/build.sh