Added comment, and fixed test.

client/mysqlslap.c:
  Comment added (and extended if() so that I didn't have to keep looking at it to make sure it was right).

client/mysqlslap.c

@@ -1034,10 +1034,13 @@ get_options(int *argc,char ***argv)
       exit(1);
   }
 
-  if (auto_generate_sql && 
-      ((auto_generate_sql_autoincrement == FALSE) ||
-       (auto_generate_sql_guid_primary == FALSE)) &&
-      auto_generate_sql_type[0] == 'k')
+  /* 
+    We are testing to make sure that if someone specified a key search
+    that we actually added a key!
+  */
+  if (auto_generate_sql && auto_generate_sql_type[0] == 'k')
+    if ( auto_generate_sql_autoincrement == FALSE &&
+         auto_generate_sql_guid_primary == FALSE)
     {
       fprintf(stderr,
               "%s: Can't perform key test without a primary key!\n",