Fix cppcheck warnings

src/mem.c

@@ -1606,6 +1606,7 @@ const chan_t *HAMLIB_API rig_lookup_mem_caps(RIG *rig, int ch)
              */
             for (j = 0; j < sizeof(channel_cap_t); j++)
             {
+                // cppcheck-suppress *
                 p1[j] |= p2[j];
             }
 

tests/ampctld.c

@@ -598,6 +598,7 @@ int main(int argc, char *argv[])
         handle_socket(arg);
 #endif
     }
+    // cppcheck-suppress *
     while (retcode == 0);
 
     amp_close(my_amp); /* close port */

tests/memcsv.c

@@ -311,6 +311,7 @@ static char *mystrtok(char *s, char delim)
         }
     }
 
+    // cppcheck-suppress *
     return str + ent_pos;
 }
 

tests/rotctl_parse.c

@@ -306,7 +306,7 @@ void hash_sort_by_model_id()
 /* Delete hash */
 void hash_delete_all()
 {
-    struct mod_lst *current_model, *tmp;
+    struct mod_lst *current_model, *tmp=NULL;
 
     HASH_ITER(hh, models, current_model, tmp)
     {

tests/rotctld.c

@@ -611,6 +611,7 @@ int main(int argc, char *argv[])
         handle_socket(arg);
 #endif
     }
+    // cppcheck-suppress *
     while (retcode == 0);
 
     rot_close(my_rot); /* close port */