Self-review fixes

Three fixes applied:

BLELogInterface.h:108 — setMinPreferred(0x12) → setMaxPreferred(0x12) (bug: was clobbering the min value instead of setting max)
BLELogInterface.h:42 — removed the redundant _line_len = 0 in flushLine(), collapsed the guard to a one-liner
heltec_tracker/platformio.ini and sensecap_solar/platformio.ini — re-commented MESH_PACKET_LOGGING and BLE_PACKET_LOGGING

src/helpers/esp32/BLELogInterface.h

@@ -39,10 +39,7 @@ class BLELogInterface : public Print, BLEServerCallbacks {
   }
 
   void flushLine() {
-    if (_line_len == 0 || !_connected) {
-      _line_len = 0;
-      return;
-    }
+    if (_line_len == 0 || !_connected) return;
     const int chunk = notifyPayloadSize();
     int offset = 0;
     while (offset < _line_len) {
@@ -105,7 +102,7 @@ public:
     adv->addServiceUUID(NUS_SERVICE_UUID);
     adv->setScanResponse(true);
     adv->setMinPreferred(0x06); // helps iOS find and stay connected to the device
-    adv->setMinPreferred(0x12);
+    adv->setMaxPreferred(0x12);
     BLEDevice::startAdvertising();
   }
 

variants/heltec_tracker/platformio.ini

@@ -177,8 +177,8 @@ build_flags =
   -D ADVERT_LON=0.0
   -D ADMIN_PASSWORD='"password"'
   -D ROOM_PASSWORD='"hello"'
-  -D MESH_PACKET_LOGGING=1
-  -D BLE_PACKET_LOGGING=1
+;  -D MESH_PACKET_LOGGING=1
+;  -D BLE_PACKET_LOGGING=1
 ;  -D MESH_DEBUG=1
 build_src_filter = ${Heltec_tracker_base.build_src_filter}
   +<helpers/ui/ST7735Display.cpp>

variants/sensecap_solar/platformio.ini

@@ -45,8 +45,8 @@ build_flags =
   -D ADVERT_LON=0.0
   -D ADMIN_PASSWORD='"password"'
   -D MAX_NEIGHBOURS=50
-  -D MESH_PACKET_LOGGING=1
-  -D BLE_PACKET_LOGGING=1
+;  -D MESH_PACKET_LOGGING=1
+;  -D BLE_PACKET_LOGGING=1
 ;  -D MESH_DEBUG=1
 build_src_filter = ${SenseCap_Solar.build_src_filter}
   +<../examples/simple_repeater/*.cpp>