fixed cd in build-android

Author: amraboelela

build-android

@@ -12,8 +12,7 @@
 
 set -e
 
-cd "$(dirname $0)/.." || exit 1
-SWIFT_PATH=$PWD
+SWIFT_PATH="$( cd "$(dirname $0)/.." && pwd )" || exit 1
 
 ANDROID_NDK_PATH="${ANDROID_NDK_PATH:?Please set the Android NDK path in the ANDROID_NDK_PATH environment variable}"
 ANDROID_ICU_PATH=${SWIFT_PATH}/libiconv-libicu-android