Add some casts to satisfy the various compilers.

Change-Id: I7687fc0b433774fe447757af00bdaa2fc44ac59d
Reviewed-on: https://code.wireshark.org/review/7254
Reviewed-by: Anders Broman <a.broman58@gmail.com>

epan/address_types.c

@@ -969,7 +969,7 @@ static void address_with_resolution_to_str_buf(const address* addr, gchar *buf,
         buf[pos++] = '(';
     }
 
-    addr_len = at->addr_to_str(addr, &buf[pos], buf_len-pos);
+    addr_len = at->addr_to_str(addr, &buf[pos], (int)(buf_len-pos));
     pos += addr_len;
 
     if (!empty)

epan/dissectors/packet-j1939.c

@@ -266,7 +266,7 @@ static int J1939_addr_to_str(const address* addr, gchar *buf, int buf_len _U_)
 
     buf = uint_to_str_back(buf, *addrdata);
     *buf = '\0';
-    return buf-start_buf+1;
+    return (int)(buf-start_buf+1);
 }
 
 static int J1939_addr_str_len(const address* addr _U_)

epan/dissectors/packet-sna.c

@@ -862,7 +862,7 @@ static int sna_fid_to_str_buf(const address *addr, gchar *buf, int buf_len _U_)
 		return 1;
 	}
 
-	return strlen(buf)+1;
+	return (int)strlen(buf)+1;
 }
 
 

epan/osi-utils.c

@@ -223,7 +223,7 @@ static int osi_address_type = -1;
 static int osi_address_to_str(const address* addr, gchar *buf, int buf_len)
 {
     print_nsap_net_buf((const guint8 *)addr->data, addr->len, buf, buf_len);
-    return strlen(buf)+1;
+    return (int)strlen(buf)+1;
 }
 
 static int osi_address_str_len(const address* addr _U_)