Stop init loops
Under certain circumstances, the libcrypto init code would loop, causing a deadlock. This would typically happen if something in ossl_init_base() caused an OpenSSL error, and the error stack routines would recurse into the init code before the flag that ossl_init_base() had been run was checked. This change makes sure ossl_init_base isn't run once more of the base is initiated. Thanks to Dmitry Kostjuchenko for the idea. Fixes Github issue #1899 Reviewed-by: Matt Caswell <matt@openssl.org> (Merged from https://github.com/openssl/openssl/pull/1922) (cherry picked from commit b7a7f39a)
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