fix(nodejs): only call get_current_error when an error occurred #624

Job	Run time
Run checks (ubuntu-latest)	22s
Run checks (macos-latest)	44s
Run checks (windows-latest)	1m 16s
Build library (linux-aarch64, ubuntu-latest, libaries_askar.so, aarch64-unknown-linux-gnu, true)	3m 30s
Build library (Android) (aarch64-linux-android)	4m 48s
Build library (linux-x86_64, ubuntu-latest, libaries_askar.so, x86_64-unknown-linux-gnu, true)	3m 29s
Run tests (ubuntu-latest)	3m 8s
Build library (Android) (armv7-linux-androideabi)	4m 38s
Build library (iOS) (aarch64-apple-ios)	3m 38s
Build library (darwin-universal, macos-latest, libaries_askar.dylib, darwin-universal, beta)	5m 46s
Run tests (macos-latest)	3m 44s
Build library (Android) (i686-linux-android)	4m 58s
Build library (windows-x86_64, windows-latest, aries_askar.dll, x86_64-pc-windows-msvc)	4m 2s
Build library (iOS) (aarch64-apple-ios-sim)	3m 48s
Run tests (windows-latest)	4m 22s
Build library (Android) (x86_64-linux-android)	4m 42s
Build library (iOS) (x86_64-apple-ios)	4m 1s
Create iOS xcframework	1m 0s
Create library (Android)	17s
Build and test Python wrapper (linux-aarch64, 3.8)	18s
Build and test Python wrapper (linux-x86_64, 3.8)	23s
Build and test JavaScript wrapper	1m 16s
Build and test Python wrapper (darwin-universal, 3.8)	29s
Build and test Python wrapper (windows-x86_64, 3.8)	1m 6s
Successful build	1s
Create iOS and Android release assets	0s
	1h 5m 46s

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