all warnings fixed

mqtt/mqtt_msg.c

@@ -125,7 +125,8 @@ static mqtt_message_t* ICACHE_FLASH_ATTR fini_message(mqtt_connection_t* connect
 
 void ICACHE_FLASH_ATTR 
 mqtt_msg_init(mqtt_connection_t* connection, uint8_t* buffer, uint16_t buffer_length) {
-  memset(connection, 0, sizeof(connection));
+  uint8_t len = sizeof(connection);
+  memset(connection, '\0', len);
   connection->buffer = buffer;
   connection->buffer_length = buffer_length;
 }

mqtt/utils.c

@@ -32,8 +32,8 @@
 */
 #include "utils.h"
 
-
+uint8_t ICACHE_FLASH_ATTR 
-uint8_t ICACHE_FLASH_ATTR UTILS_IsIPV4 (int8_t *str)
+UTILS_IsIPV4(int8_t *str)
 {
   uint8_t segs = 0;   /* Segment count. */
   uint8_t chcnt = 0;  /* Character count within segment. */
@@ -83,23 +83,22 @@ uint8_t ICACHE_FLASH_ATTR UTILS_IsIPV4 (int8_t *str)
 
   return 1;
 }
-uint8_t ICACHE_FLASH_ATTR UTILS_StrToIP(const int8_t* str, void *ip)
+
+uint8_t ICACHE_FLASH_ATTR
+UTILS_StrToIP(const int8_t* str, void *ip)
 {
 
   /* The count of the number of bytes processed. */
   int i;
   /* A pointer to the next digit to process. */
-	    const char * start;
-
-	    start = str;
   for (i = 0; i < 4; i++) {
     /* The digit being processed. */
     char c;
     /* The value of this byte. */
     int n = 0;
     while (1) {
-	            c = * start;
+      c = *(const char *)str;
-	            start++;
+      (const char *)str++;
       if (c >= '0' && c <= '9') {
         n *= 10;
         n += c - '0';
@@ -120,19 +119,20 @@ uint8_t ICACHE_FLASH_ATTR UTILS_StrToIP(const int8_t* str, void *ip)
     ((uint8_t*)ip)[i] = n;
   }
   return 1;
-
 }
-uint32_t ICACHE_FLASH_ATTR UTILS_Atoh(const int8_t *s)
+
+uint32_t ICACHE_FLASH_ATTR 
+UTILS_Atoh(const int8_t *s)
 {
   uint32_t value = 0, digit;
   int8_t c;
 
-	while((c = *s++)){
+  while ((c = *s++)){
-		if('0' <= c && c <= '9')
+    if ('0' <= c && c <= '9')
       digit = c - '0';
-		else if('A' <= c && c <= 'F')
+    else if ('A' <= c && c <= 'F')
       digit = c - 'A' + 10;
-		else if('a' <= c && c<= 'f')
+    else if ('a' <= c && c <= 'f')
       digit = c - 'a' + 10;
     else break;