FIX GHA clang failures for clang 14

- remove  explicit conversion, seems to cause clang 14 to fail
- base path of LD_PRELOAD based on major version of clang
  instead of hard-coded 11

Closes #5400

ci/github/run_usan_clang.sh

@@ -1,16 +1,21 @@
 #!/usr/bin/env bash
 set -e
-
+CLANG_FULL_VER=`clang --version`
+echo $CLANG_FULL_VER
+echo `cat /etc/os-release`
+export CLANG_VER=`clang --version | perl -lne 'print $1 if /version (\d+)/'`
+echo "Clang major version is: $CLANG_VER"
 # Enable undefined behaviour sanitizer using traps
-CFLAGS_USAN="-g3 -O0 -mtune=generic -fno-omit-frame-pointer -fsanitize=undefined,implicit-conversion -fsanitize-undefined-trap-on-error -fno-sanitize-recover=implicit-conversion"
+CFLAGS_USAN="-g3 -O0 -mtune=generic -fno-omit-frame-pointer -fsanitize=undefined -fsanitize-undefined-trap-on-error -fno-sanitize-recover"
 LDFLAGS_STD="-Wl,-Bsymbolic-functions -Wl,-z,relro"
 
 # Sanitizer options to continue avoid stopping the runs on leaks (expected on postgres binaries)
 export ASAN_OPTIONS=halt_on_error=false,leak_check_at_exit=false,exitcode=0
 export MSAN_OPTIONS=halt_on_error=false,leak_check_at_exit=false,exitcode=0
 
 #Run postgres preloading sanitizer libs
-LD_PRELOAD=/usr/lib/clang/11/lib/linux/libclang_rt.asan-x86_64.so \
+LD_PRELOAD=/usr/lib/clang/${CLANG_VER}/lib/linux/libclang_rt.asan-x86_64.so
+
 /usr/local/pgsql/bin/pg_ctl -c -o '-F' -l /tmp/logfile start