Fix maybe-uninitialized warning
GCC 4.8 warns that some variables may be used without having been
initialized. They aren't, but determining that takes nontrivial
analysis, so initialize them at the point of definition.
diff --git a/programs/psa/key_ladder_demo.c b/programs/psa/key_ladder_demo.c
index 470b1fc..4acf6b1 100644
--- a/programs/psa/key_ladder_demo.c
+++ b/programs/psa/key_ladder_demo.c
@@ -393,7 +393,7 @@
FILE *output_file = NULL;
long input_position;
size_t input_size;
- size_t buffer_size;
+ size_t buffer_size = 0;
unsigned char *buffer = NULL;
size_t ciphertext_size;
wrapped_data_header_t header;
@@ -469,7 +469,7 @@
FILE *input_file = NULL;
FILE *output_file = NULL;
unsigned char *buffer = NULL;
- size_t ciphertext_size;
+ size_t ciphertext_size = 0;
size_t plaintext_size;
wrapped_data_header_t header;
unsigned char extra_byte;