Without this all checks fail because CMake passes the flags like this: `... -nodefaultlibs -D-Warray-bounds -Werror -std=c++17 ...` Note the `-D` before the `-W`.

-Werror is redundant because CMake parses the output of try_compile, and if it finds the name of the tested flag in the output it concludes that the flag is unsupported. The patch also fixes a typo in a variable name that was the reason for adding -Werror in the first place.

Without this all checks fail-Werror is redundant because CMake pasrses the flagsoutput of try_compile, like this:and if it finds the name of the tested flag in the output it concludes `... -nodefaultlibs -D-Warray-bounds -Werror -std=c++17 ...`that the flag is unsupported. NotThe patch also fixes a typo in a variable name the `-D` beforeat was the reason for adding -Werror in the `-W`first place.