Fix and disable warnings

findbugs.xml

@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<FindBugsFilter>
+  <Match>
+    <Class name="org.traccar.notification.PropertiesProvider" />
+    <Method name="getBoolean" />
+    <Bug pattern="NP_BOOLEAN_RETURN_NULL" />
+  </Match>
+  <Match>
+    <Class name="org.traccar.protocol.TrvProtocolDecoder" />
+    <Method name="decodeOptionalValue" />
+    <Bug pattern="NP_BOOLEAN_RETURN_NULL" />
+  </Match>
+  <Match>
+    <Class name="org.traccar.protocol.Gps056ProtocolDecoder" />
+    <Method name="decodeCoordinate" />
+    <Bug pattern="ICAST_IDIV_CAST_TO_DOUBLE" />
+  </Match>
+  <Match>
+    <Class name="org.traccar.protocol.PricolProtocolDecoder" />
+    <Method name="decode" />
+    <Bug pattern="ICAST_IDIV_CAST_TO_DOUBLE" />
+  </Match>
+</FindBugsFilter>

pom.xml

@@ -314,6 +314,9 @@
                 <groupId>org.codehaus.mojo</groupId>
                 <artifactId>findbugs-maven-plugin</artifactId>
                 <version>3.0.5</version>
+                <configuration>
+                    <excludeFilterFile>findbugs.xml</excludeFilterFile>
+                </configuration>
             </plugin>
             <plugin>
                 <artifactId>maven-pmd-plugin</artifactId>

src/org/traccar/protocol/MeitrackProtocolDecoder.java

@@ -242,13 +242,14 @@ private Position decodeRegular(Channel channel, SocketAddress remoteAddress, Cha
         }
 
         if (parser.hasNext(2)) {
-            decodeDataFields(position, parser.nextInt(), parser.next().split(","));
+            parser.nextInt(); // count
+            decodeDataFields(position, parser.next().split(","));
         }
 
         return position;
     }
 
-    private void decodeDataFields(Position position, int count, String[] values) {
+    private void decodeDataFields(Position position, String[] values) {
 
         if (values.length > 1 && !values[1].isEmpty()) {
             position.set("tempData", values[1]);