error: this statement may fall through

[spl0i7]

I was trying to install polybar which uses jsoncpp as a dependency but ran into an error while compiling which seem to be coming from jsoncpp

[  2%] Building CXX object lib/i3ipcpp/libs/jsoncpp-1.7.7/src/lib_json/CMakeFiles/jsoncpp_lib_static.dir/json_reader.cpp.o
/tmp/polybar/lib/i3ipcpp/libs/jsoncpp-1.7.7/src/lib_json/json_reader.cpp: In member function ‘bool Json::OurReader::readToken(Json::OurReader::Token&)’:
/tmp/polybar/lib/i3ipcpp/libs/jsoncpp-1.7.7/src/lib_json/json_reader.cpp:1230:5: error: this statement may fall through [-Werror=implicit-fallthrough=]
     if (features_.allowSingleQuotes_) {
     ^~
/tmp/polybar/lib/i3ipcpp/libs/jsoncpp-1.7.7/src/lib_json/json_reader.cpp:1235:3: note: here
   case '/':
   ^~~~
cc1plus: all warnings being treated as errors
lib/i3ipcpp/libs/jsoncpp-1.7.7/src/lib_json/CMakeFiles/jsoncpp_lib_static.dir/build.make:62: recipe for target 'lib/i3ipcpp/libs/jsoncpp-1.7.7/src/lib_json/CMakeFiles/jsoncpp_lib_static.dir/json_reader.cpp.o' failed
make[2]: *** [lib/i3ipcpp/libs/jsoncpp-1.7.7/src/lib_json/CMakeFiles/jsoncpp_lib_static.dir/json_reader.cpp.o] Error 1
CMakeFiles/Makefile2:541: recipe for target 'lib/i3ipcpp/libs/jsoncpp-1.7.7/src/lib_json/CMakeFiles/jsoncpp_lib_static.dir/all' failed
make[1]: *** [lib/i3ipcpp/libs/jsoncpp-1.7.7/src/lib_json/CMakeFiles/jsoncpp_lib_static.dir/all] Error 2
Makefile:129: recipe for target 'all' failed
make: *** [all] Error 2

[cdunn2001]

But we want the fallthru:

1235   case '\'':
1236     if (features_.allowSingleQuotes_) {
1237       token.type_ = tokenString;
1238       ok = readStringSingleQuote();
1239       break;
1240     } // else continue
1241   case '/':
1242     token.type_ = tokenComment;
1243     ok = readComment();
1244     break;

What do you suggest? Please submit a PR.