test/cli/runtests.sh: disable -Wimplicit-function-declaration to avoid warnings on macos-13 for now

Author: firewave

test/cfg/runtests.sh

@@ -44,7 +44,7 @@ CPPCHECK_OPT=(
 CXX=g++
 CXX_OPT=("-fsyntax-only" "-w" "-std=c++2a")
 CC=gcc
-CC_OPT=("-fsyntax-only" "-w" "-Wimplicit-function-declaration" "-std=c11")
+CC_OPT=("-fsyntax-only" "-w" "-Wno-implicit-function-declaration" "-std=c11") # TODO: enable -Wimplicit-function-declaration
 
 function get_pkg_config_cflags {
     # TODO: get rid of the error enabling/disabling?