meson: require SecurityFramework when it's used as SHA1 backend

The Security framework is required when we use CommonCrypto either as
HTTPS or SHA1 backend, but we only require it in case it is set up as
HTTPS backend. Fix this.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Author: pks-t

meson.build

@@ -1329,7 +1329,7 @@ https_backend = get_option('https_backend')
 sha1_backend = get_option('sha1_backend')
 sha256_backend = get_option('sha256_backend')
 
-security_framework = dependency('Security', required: https_backend == 'CommonCrypto')
+security_framework = dependency('Security', required: https_backend == 'CommonCrypto' or sha1_backend == 'CommonCrypto')
 core_foundation_framework = dependency('CoreFoundation', required: security_framework.found())
 if https_backend == 'auto' and security_framework.found()
   https_backend = 'CommonCrypto'