build-package.sh: fix printing of error message when trying to run script on Android device

build-package.sh

@@ -3,6 +3,10 @@
 
 set -e -o pipefail -u
 
+if [ "$(uname -o)" = Android ]; then
+	termux_error_exit "On-device builds are not supported - see README.md"
+fi
+
 # Lock file to prevent parallel running in the same environment.
 TERMUX_BUILD_LOCK_FILE="/tmp/.termux-build.lck"
 if [ ! -e "$TERMUX_BUILD_LOCK_FILE" ]; then

scripts/build/termux_error_exit.sh

@@ -2,7 +2,3 @@ termux_error_exit() {
 	echo "ERROR: $*" 1>&2
 	exit 1
 }
-
-if [ "$(uname -o)" = Android ]; then
-	termux_error_exit "On-device builds are not supported - see README.md"
-fi