btrfs-progs: build: fix builds with extra warnings, W=1

Wrong variable name used in the main makefile.

Signed-off-by: David Sterba <dsterba@suse.com>

diff --git a/Makefile.in b/Makefile.in
index c32cc70..112c3ba 100644 (file)
--- a/Makefile.in
+++ b/Makefile.in
@@ -42,7 +42,7 @@ CFLAGS = @CFLAGS@ \
         -DBTRFS_FLAT_INCLUDES \
         -D_XOPEN_SOURCE=700  \
         -fno-strict-aliasing \
-        -fPIC $(KBUILD_CFLAGS) $(EXTRA_CFLAGS)
+        -fPIC $(EXTRAWARN_CFLAGS) $(EXTRA_CFLAGS)
 
 LDFLAGS = @LDFLAGS@ \
          -rdynamic $(EXTRA_LDFLAGS)