Adjust spacing in sample programs

Signed-off-by: Michael Schuster <michael@schuster.ms>
diff --git a/programs/pkey/gen_key.c b/programs/pkey/gen_key.c
index 4ad1629..83d7b71 100644
--- a/programs/pkey/gen_key.c
+++ b/programs/pkey/gen_key.c
@@ -40,7 +40,7 @@
 #define DEV_RANDOM_THRESHOLD        32
 
 static int dev_random_entropy_poll(void *data, unsigned char *output,
-                            size_t len, size_t *olen)
+                                   size_t len, size_t *olen)
 {
     FILE *file;
     size_t ret, left = len;