Fix inconsistent type error (#1427)

Signed-off-by: Chris Jackson <chris@cd-jackson.com>

com.zsmartsystems.zigbee/src/main/java/com/zsmartsystems/zigbee/app/otaserver/ZigBeeOtaFile.java

@@ -280,7 +280,7 @@ private void readOtaFile() {
 
             // The length dictates the length of the rest of the data within the sub-element in bytes. It does not
             // include the size of the Tag ID or the Length Fields.
-            long tagLength = readUnsigned32();
+            int tagLength = readUnsigned32();
             logger.debug("Reading OTA image tag {}[{}] ({} bytes long)", tagType, String.format("%04X", tagId),
                     tagLength);