* fix for RAK terminal chat

platformio.ini

@@ -96,7 +96,7 @@ extends = Heltec_lora32_v3
 build_flags =
   ${Heltec_lora32_v3.build_flags} 
   -D MAX_CONTACTS=100
-  -D MAX_CHANNELS=1
+  -D MAX_GROUP_CHANNELS=1
 ;  -D MESH_PACKET_LOGGING=1
 ;  -D MESH_DEBUG=1
 build_src_filter = ${Heltec_lora32_v3.build_src_filter} +<../examples/simple_secure_chat/main.cpp>
@@ -263,7 +263,7 @@ extends = rak4631
 build_flags =
   ${rak4631.build_flags} 
   -D MAX_CONTACTS=100
-  -D MAX_CHANNELS=1
+  -D MAX_GROUP_CHANNELS=1
   -D MESH_PACKET_LOGGING=1
   -D MESH_DEBUG=1
 build_src_filter = ${rak4631.build_src_filter} +<../examples/simple_secure_chat/main.cpp>

src/helpers/BaseChatMesh.cpp

@@ -267,7 +267,7 @@ bool BaseChatMesh::addContact(const ContactInfo& contact) {
 }
 
 mesh::GroupChannel* BaseChatMesh::addChannel(const char* psk_base64) {
-  if (num_channels < MAX_CHANNELS) {
+  if (num_channels < MAX_GROUP_CHANNELS) {
     auto dest = &channels[num_channels];
 
     memset(dest->secret, 0, sizeof(dest->secret));

src/helpers/BaseChatMesh.h

@@ -48,7 +48,7 @@ class BaseChatMesh : public mesh::Mesh {
   int sort_array[MAX_CONTACTS];
   int matching_peer_indexes[MAX_SEARCH_RESULTS];
   unsigned long txt_send_timeout;
-  mesh::GroupChannel channels[MAX_CHANNELS];
+  mesh::GroupChannel channels[MAX_GROUP_CHANNELS];
   int num_channels;
 
   mesh::Packet* composeMsgPacket(const ContactInfo& recipient, uint8_t attempt, const char *text, uint32_t& expected_ack);