host: fix sysctl adding newlines to output

pfetch

@@ -217,7 +217,18 @@ get_host() {
         ;;
 
         *BSD*)
-            host=$(sysctl -n hw.vendor hw.product)
+            # Use 'set --' to store the output of the command
+            # as it normalizes whitespace and strips newlines.
+            #
+            # Disable the shellcheck warning for word-splitting
+            # as it's safe and intended ('set -f' disables globbing).
+            # shellcheck disable=2046
+            {
+                set -f
+                set +f -- $(sysctl -n hw.vendor hw.product)
+            }
+
+            host=$*
         ;;
     esac