Hoisted out rb_digest_namespace

ext/digest/digest.h

@@ -49,3 +49,10 @@ rb_digest_##name##_finish(void *ctx, unsigned char *ptr) \
 { \
     return name##_Final(ptr, ctx); \
 }
+
+static inline VALUE
+rb_digest_namespace(void)
+{
+    rb_require("digest");
+    return rb_path2class("Digest");
+}

ext/digest/md5/md5init.c

@@ -51,12 +51,10 @@ Init_md5(void)
 {
     VALUE mDigest, cDigest_Base, cDigest_MD5;
 
-    rb_require("digest");
-
 #if 0
     mDigest = rb_define_module("Digest"); /* let rdoc know */
 #endif
-    mDigest = rb_path2class("Digest");
+    mDigest = rb_digest_namespace();
     cDigest_Base = rb_path2class("Digest::Base");
 
     cDigest_MD5 = rb_define_class_under(mDigest, "MD5", cDigest_Base);

ext/digest/rmd160/rmd160init.c

@@ -49,12 +49,10 @@ Init_rmd160(void)
 {
     VALUE mDigest, cDigest_Base, cDigest_RMD160;
 
-    rb_require("digest");
-
 #if 0
     mDigest = rb_define_module("Digest"); /* let rdoc know */
 #endif
-    mDigest = rb_path2class("Digest");
+    mDigest = rb_digest_namespace();
     cDigest_Base = rb_path2class("Digest::Base");
 
     cDigest_RMD160 = rb_define_class_under(mDigest, "RMD160", cDigest_Base);

ext/digest/sha1/sha1init.c

@@ -53,12 +53,10 @@ Init_sha1(void)
 {
     VALUE mDigest, cDigest_Base, cDigest_SHA1;
 
-    rb_require("digest");
-
 #if 0
     mDigest = rb_define_module("Digest"); /* let rdoc know */
 #endif
-    mDigest = rb_path2class("Digest");
+    mDigest = rb_digest_namespace();
     cDigest_Base = rb_path2class("Digest::Base");
 
     cDigest_SHA1 = rb_define_class_under(mDigest, "SHA1", cDigest_Base);

ext/digest/sha2/sha2init.c

@@ -42,11 +42,9 @@ Init_sha2(void)
 
     FOREACH_BITLEN(DECLARE_ALGO_CLASS)
 
-    rb_require("digest");
-
     id_metadata = rb_intern_const("metadata");
 
-    mDigest = rb_path2class("Digest");
+    mDigest = rb_digest_namespace();
     cDigest_Base = rb_path2class("Digest::Base");
 
 #define DEFINE_ALGO_CLASS(bitlen) \