fix(nodejs): only call get_current_error when an error occurred #614

Job	Run time
Run checks (ubuntu-latest)	28s
Run checks (macos-latest)	1m 0s
Run checks (windows-latest)	1m 25s
Build library (iOS) (aarch64-apple-ios)	7m 21s
Build library (linux-aarch64, ubuntu-latest, libaries_askar.so, aarch64-unknown-linux-gnu, true)	3m 38s
Build library (iOS) (aarch64-apple-ios-sim)	9m 28s
Run tests (ubuntu-latest)	3m 5s
Build library (linux-x86_64, ubuntu-latest, libaries_askar.so, x86_64-unknown-linux-gnu, true)	3m 31s
Build library (Android) (aarch64-linux-android)	4m 3s
Run tests (macos-latest)	4m 18s
Build library (iOS) (x86_64-apple-ios)	7m 4s
Build library (darwin-universal, macos-latest, libaries_askar.dylib, darwin-universal, beta)	11m 47s
Build library (Android) (armv7-linux-androideabi)	4m 3s
Run tests (windows-latest)	4m 22s
Build library (windows-x86_64, windows-latest, aries_askar.dll, x86_64-pc-windows-msvc)	4m 26s
Build library (Android) (i686-linux-android)	4m 2s
Build library (Android) (x86_64-linux-android)	4m 9s
Create library (Android)	0s
Create iOS xcframework	1m 0s
Create iOS and Android release assets	0s
Build and test Python wrapper (linux-aarch64, 3.8)	16s
Build and test JavaScript wrapper	1m 1s
Build and test Python wrapper (linux-x86_64, 3.8)	23s
Build and test Python wrapper (darwin-universal, 3.8)	28s
Build and test Python wrapper (windows-x86_64, 3.8)	37s
Successful build	1s
	1h 21m 56s

Provide feedback