Auto-port 4.1: Native transports: Fix undefined behaviour when GetStringUTFChars fails while open FD#16456
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Auto-port of #16450 to 4.1
Cherry-picked commit: 8996631
Motivation:
We need to handle the case of GetStringUTFChars returning NULL as otherwise we run into undefined behavior which will most likely cause a crash
Modifications:
Return -ENOMEM in case of failure
Result:
No more undef behavior