Added existance check for alarm.json and dev.json

src/Globals.cpp

@@ -35,11 +35,9 @@ void startLittleFS()
 void loadDevSettings()
 {
     Serial.println("loadSettings");
-    File file = LittleFS.open("/dev.json", "r");
+    if (LittleFS.exists("/dev.json"))
-    if (!file)
     {
-        return;
+        File file = LittleFS.open("/dev.json", "r");
-    }
         DynamicJsonDocument doc(128);
         DeserializationError error = deserializeJson(doc, file);
         if (error)
@@ -59,6 +57,7 @@ void loadDevSettings()
         }
 
         file.close();
+    }
 }
 
 void loadSettings()

src/PeripheryManager.cpp

@@ -329,12 +329,9 @@ time_t lastAlarmTime = 0;
 
 void PeripheryManager_::checkAlarms()
 {
-    File file = LittleFS.open("/alarms.json", "r");
+    if (LittleFS.exists("/alarms.json"))
-    if (!file)
     {
-        return;
+        File file = LittleFS.open("/alarms.json", "r");
-    }
-
         DynamicJsonDocument doc(file.size() * 1.33);
         DeserializationError error = deserializeJson(doc, file);
         if (error)
@@ -387,6 +384,7 @@ void PeripheryManager_::checkAlarms()
                 }
             }
         }      
+    }
 }
 
 const char *PeripheryManager_::readUptime()