external/boringssl: Sync to 9bbdf5832de8a2d395303c669b594fc61c791f4d.

This includes the following changes:

https://boringssl.googlesource.com/boringssl/+log/c642aca28feb7e18f244658559f4042286aed0c8..9bbdf5832de8a2d395303c669b594fc61c791f4d

Test: BoringSSL CTS Presubmits.
Change-Id: Ieb6fcfee99c4cc496b2f6e1d3e6597784bd80189
diff --git a/src/include/openssl/dsa.h b/src/include/openssl/dsa.h
index afe0291..f992b91 100644
--- a/src/include/openssl/dsa.h
+++ b/src/include/openssl/dsa.h
@@ -298,8 +298,8 @@
                                         CRYPTO_EX_unused *unused,
                                         CRYPTO_EX_dup *dup_unused,
                                         CRYPTO_EX_free *free_func);
-OPENSSL_EXPORT int DSA_set_ex_data(DSA *d, int idx, void *arg);
-OPENSSL_EXPORT void *DSA_get_ex_data(const DSA *d, int idx);
+OPENSSL_EXPORT int DSA_set_ex_data(DSA *dsa, int idx, void *arg);
+OPENSSL_EXPORT void *DSA_get_ex_data(const DSA *dsa, int idx);
 
 
 /* Deprecated functions. */