* simple_secure_chat: bug fixes

platformio.ini

@@ -73,6 +73,7 @@ build_flags =
   ${Heltec_lora32_v3.build_flags} 
   -D RUN_AS_ALICE=true
 ; -D NODE_ID=1
+  -D MESH_DEBUG=1
 build_src_filter = ${Heltec_lora32_v3.build_src_filter} +<../examples/simple_secure_chat/main.cpp>
 
 [env:Heltec_v3_chat_bob]
@@ -81,6 +82,7 @@ build_flags =
   ${Heltec_lora32_v3.build_flags} 
   -D RUN_AS_ALICE=false
 ; -D NODE_ID=3
+  -D MESH_DEBUG=1
 build_src_filter = ${Heltec_lora32_v3.build_src_filter} +<../examples/simple_secure_chat/main.cpp>
 
 [env:Heltec_v3_test_admin]