Avoid sysctl: unknown oid stderr output and/or non-zero exit code

Author: rami3l

rustup-init.sh

@@ -261,11 +261,13 @@ get_architecture() {
         # get the real answer, but that's hard to ensure, so instead we use
         # `sysctl` (which doesn't lie) to check for the actual architecture.
         if [ "$_cputype" = i386 ]; then
-            if sysctl hw.optional.x86_64 | grep -q ': 1'; then
+            # Avoid `sysctl: unknown oid` stderr output and/or non-zero exit code.
+            if sysctl hw.optional.x86_64 2> /dev/null || true | grep -q ': 1'; then
                 _cputype=x86_64
             fi
         elif [ "$_cputype" = x86_64 ]; then
-            if sysctl hw.optional.arm64 | grep -q ': 1'; then
+            # Avoid `sysctl: unknown oid` stderr output and/or non-zero exit code.
+            if sysctl hw.optional.arm64 2> /dev/null || true | grep -q ': 1'; then
                 _cputype=arm64
             fi
         fi