nobu	2018-12-08 15:52:21 +0900 (Sat, 08 Dec 2018)

  New Revision: 66284

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=66284

  Log:
    Duplicate header name only if found

  Modified files:
    trunk/mjit.c
Index: mjit.c
===================================================================
--- mjit.c	(revision 66283)
+++ mjit.c	(revision 66284)
@@ -416,10 +416,10 @@ init_header_filename(void) https://github.com/ruby/ruby/blob/trunk/mjit.c#L416
             verbose(3, "PRELOADENV("PRELOADENV")=%s", getenv(PRELOADENV));
             /* assume no other PRELOADENV in test-all */
             unsetenv(PRELOADENV);
+            verbose(3, "MJIT_HEADER: %s", hdr);
+            header_file = ruby_strdup(hdr);
+            if (!header_file) return FALSE;
         }
-        verbose(3, "MJIT_HEADER: %s", hdr);
-        header_file = ruby_strdup(hdr);
-        if (!header_file) return FALSE;
     }
     else
 #endif

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