Style: fix trailing spaces
diff --git a/programs/pkey/key_app.c b/programs/pkey/key_app.c
index 2ebeb41..98f36db 100644
--- a/programs/pkey/key_app.c
+++ b/programs/pkey/key_app.c
@@ -51,7 +51,7 @@
 #define DFL_PASSWORD            ""
 #define DFL_PASSWORD_FILE       ""
 #define DFL_DEBUG_LEVEL         0
-    
+
 #define USAGE \
     "\n usage: key_app param=<>...\n"                   \
     "\n acceptable parameters:\n"                       \