Fixed a couple of gcc warnings

In cups/dest.c:

    dest.c:1830:21: warning: ‘%s’ directive argument is null [-Wformat-overflow=]
     1733 |       DEBUG_printf(("1cupsGetNamedDest: Using name=\"%s\"...", name));
	  |                     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

This is really true, and gcc was smart enough to deduct it from context.
Obviously, we meant to print dest_name here.

In cgi-bin/search.c:

    search.c:191:29: warning: pointer ‘s’ may be used after ‘realloc’ [-Wuse-after-free]
      191 |         sptr = temp + (sptr - s);
	  |                       ~~~~~~^~~~

The code is correct, but too hard for gcc to analyze. So code simplified
a bit to make compiler happy.

cgi-bin/search.c

@@ -172,7 +172,8 @@ cgiCompileSearch(const char *query)	/* I - Query string */
         * Expand the RE string buffer...
 	*/
 
-        char *temp;			/* Temporary string pointer */
+        char	*temp;			/* Temporary string pointer */
+	size_t  soff = sptr - s;	/* Save offset to use after realloc */
 
 
 	slen = wlen + 128;
@@ -188,7 +189,7 @@ cgiCompileSearch(const char *query)	/* I - Query string */
 	  return (NULL);
 	}
 
-        sptr = temp + (sptr - s);
+        sptr = temp + soff;
 	s    = temp;
       }
 

cups/dest.c

@@ -1730,7 +1730,7 @@ cupsGetNamedDest(http_t     *http,	// I - Connection to server or @code CUPS_HTT
       DEBUG_puts("1cupsGetNamedDest: Asking server for default printer...");
     }
     else
-      DEBUG_printf("1cupsGetNamedDest: Using name=\"%s\"...", name);
+      DEBUG_printf("1cupsGetNamedDest: Using name=\"%s\"...", dest_name);
   }
 
   //