Make sure that fgets and fgetc are undefined before their redefinition.

This fixes a potential issue from changeset e0a103845344.

diff --git a/mutt.h b/mutt.h
index 9d3183020b5886f48c11062b6d327981d1797145..9576708974523bd5046e7a4e0afd1fa0cc83cda0 100644 (file)
--- a/mutt.h
+++ b/mutt.h
@@ -72,10 +72,16 @@
 #endif
 
 #ifdef HAVE_FGETS_UNLOCKED
+# ifdef fgets
+#  undef fgets
+# endif
 # define fgets fgets_unlocked
 #endif
 
 #ifdef HAVE_FGETC_UNLOCKED
+# ifdef fgetc
+#  undef fgetc
+# endif
 # define fgetc fgetc_unlocked
 #endif