Arm backend: Fix broken logic when checking os in utils.sh (#13939)

The logic was flawed due to incorrect use of the logical OR operator.

This condition will always evaluate to true because an OS cant be both
Darwin and Linux simultaneously.

Signed-off-by: [email protected]

Author: perheld

backends/arm/scripts/utils.sh

@@ -84,7 +84,7 @@ function check_os_support() {
     # Linux on arm64/aarch64
     # Darwin on arm64/aarch64
     if [[ "${ARCH}" == "aarch64" ]] || [[ "${ARCH}" == "arm64" ]]; then
-        if [[ "${OS}" != "Darwin" ]] || [[ "${OS}" != "Linux" ]]; then
+        if [[ "${OS}" != "Darwin" ]] && [[ "${OS}" != "Linux" ]]; then
             echo "Error: Only Linux and Darwin are supported on arm64"
             exit 1
         fi