ssl_test.c: remove dead store, assign at declaration

Found with Clang's `scan-build` tool.

The store to `ret` is not used, it's overwritten shortly after. Assign
the value of 1 at declaration time instead to silence scan-build.
diff --git a/programs/test/ssl_test.c b/programs/test/ssl_test.c
index ab7b812..b436d17 100644
--- a/programs/test/ssl_test.c
+++ b/programs/test/ssl_test.c
@@ -142,7 +142,7 @@
  */
 static int ssl_test( struct options *opt )
 {
-    int ret, i;
+    int ret = 1, i;
     int client_fd = -1;
     int bytes_to_read;
     int bytes_to_write;
@@ -169,8 +169,6 @@
     x509_crt srvcert;
     pk_context pkey;
 
-    ret = 1;
-
     memset( &ssl, 0, sizeof(ssl_context) );
     entropy_init( &entropy );
     x509_crt_init( &srvcert );