Remove some unneccessary assignments to argc

openssl.c and ts.c assign the value of opt_num_rest() to argc, but then
only use the value once.

Reviewed-by: Richard Levitte <levitte@openssl.org>

apps/ts.c

diff --git a/apps/ts.c b/apps/ts.c
index ff4b25e..cec2177 100644
--- a/apps/ts.c
+++ b/apps/ts.c
@@ -319,8 +319,7 @@
             break;
         }
     }
-    argc = opt_num_rest();
-    if (mode == OPT_ERR || argc != 0)
+    if (mode == OPT_ERR || opt_num_rest() != 0)
         goto opthelp;
 
     /* Seed the random number generator if it is going to be used. */