strerrorname_np: Fix compilation error on IRIX

[Bruno Haible]

On IRIX 6.5, I see a compilation error:

strerrorname_np.c: In function `strerrorname_np':
strerrorname_np.c:572: error: duplicate case value
strerrorname_np.c:468: error: previously used here

This patch fixes it.


2021-12-24  Bruno Haible  <bruno@clisp.org>

        strerrorname_np: Fix compilation error on IRIX.
        * lib/strerrorname_np.c (strerrorname_np): Handle conflict between
        EDIRCORRUPTED and EFSCORRUPTED.
        * tests/test-strerrorname_np.c (main): Likewise.

diff --git a/lib/strerrorname_np.c b/lib/strerrorname_np.c
index a39270060..8b602e741 100644
--- a/lib/strerrorname_np.c
+++ b/lib/strerrorname_np.c
@@ -464,7 +464,7 @@ strerrorname_np (int errnum)
     case EDIED:           return "EDIED";
     #endif
     /* IRIX */
-    #if defined EDIRCORRUPTED
+    #if defined EDIRCORRUPTED && EDIRCORRUPTED != EFSCORRUPTED
     case EDIRCORRUPTED:   return "EDIRCORRUPTED";
     #endif
     /* FreeBSD */
diff --git a/tests/test-strerrorname_np.c b/tests/test-strerrorname_np.c
index e6f57c558..b76584913 100644
--- a/tests/test-strerrorname_np.c
+++ b/tests/test-strerrorname_np.c
@@ -466,7 +466,7 @@ main (void)
   ASSERT (strcmp (strerrorname_np (EDIED), "EDIED") == 0);
   #endif
   /* IRIX */
-  #if defined EDIRCORRUPTED
+  #if defined EDIRCORRUPTED && EDIRCORRUPTED != EFSCORRUPTED
   ASSERT (strcmp (strerrorname_np (EDIRCORRUPTED), "EDIRCORRUPTED") == 0);
   #endif
   /* FreeBSD */