external/boringssl: Sync to bc2a2013e03754a89a701739a7b58c422391efa2.

Third time's the charm.

This includes the following changes:

https://boringssl.googlesource.com/boringssl/+log/c9827e073f64e353c4891ecc2c73721882543ee0..bc2a2013e03754a89a701739a7b58c422391efa2

Test: atest CtsLibcoreTestCases
Test: atest CtsLibcoreOkHttpTestCases
Change-Id: I7943c83d12237ec6e4dc54fb3d5a9cecb909e6e7
diff --git a/src/crypto/fipsmodule/modes/asm/ghash-ssse3-x86.pl b/src/crypto/fipsmodule/modes/asm/ghash-ssse3-x86.pl
index 0d9ce15..45e1ee1 100644
--- a/src/crypto/fipsmodule/modes/asm/ghash-ssse3-x86.pl
+++ b/src/crypto/fipsmodule/modes/asm/ghash-ssse3-x86.pl
@@ -285,4 +285,4 @@
 
 &asm_finish();
 
-close STDOUT;
+close STDOUT or die "error closing STDOUT";