samba: prepare for llvm 22 upgrade (#13958)

Author: DavidKorczynski

projects/samba/build.sh

@@ -17,7 +17,7 @@
 
 export CFLAGS="$CFLAGS -Wno-error=strict-prototypes -Wno-error=format-truncation"
 
-if [ -f /usr/local/bin/clang-21 ]; then
+if [ -f /usr/local/bin/clang-22 ]; then
   export CFLAGS="${CFLAGS} -Wno-error=uninitialized-const-pointer -Wno-error=sometimes-uninitialized"
 fi
 # The real script is maintained in the Samba repo