bugfix progversion handling in configmanager

include/globals.h

@@ -55,7 +55,7 @@ enum snifftype_t { MAC_SNIFF_WIFI, MAC_SNIFF_BLE, MAC_SNIFF_BLE_ENS };
 // using packed to avoid compiler padding, because struct will be memcpy'd to
 // byte array
 typedef struct __attribute__((packed)) {
-  char version[10];    // Firmware version
+  char version[10] = ""; // Firmware version
   uint8_t loradr;        // 0-15, lora datarate
   uint8_t txpower;       // 2-15, lora tx power
   uint8_t adrmode;       // 0=disabled, 1=enabled

src/configmanager.cpp

@@ -32,7 +32,9 @@ static uint8_t buffer[cfgLen + cfgLen2];
 // 3. magicByte [cfgLen2 bytes, containing a fixed identifier]
 
 static void defaultConfig(configData_t *myconfig) {
-  memcpy(myconfig->version, &PROGVERSION, 10); // Firmware version
+
+  strncpy(myconfig->version, PROGVERSION,
+          sizeof(myconfig->version) - 1); // Firmware version
 
   // device factory settings
   myconfig->loradr = LORADRDEFAULT; // 0-15, lora datarate, see paxcounter.conf