Resolve lgtm warning

Author: SgtSilvio

examples/src/main/java/com/hivemq/client/mqtt/examples/ReconnectStrategy.java

@@ -73,7 +73,7 @@ private static void completelyCustom() {
                 .addDisconnectedListener(context -> {
                     context.getReconnector()
                             .reconnect(true) // always reconnect (includes calling disconnect)
-                            .delay(2 * context.getReconnector().getAttempts(), TimeUnit.SECONDS); // linear scaling delay
+                            .delay(2L * context.getReconnector().getAttempts(), TimeUnit.SECONDS); // linear scaling delay
                 })
                 // multiple DisconnectedListener can form a reconnect strategy
                 .addDisconnectedListener(context -> {

src/main/java/com/hivemq/client/internal/mqtt/datatypes/MqttVariableByteInteger.java

@@ -32,7 +32,7 @@ public final class MqttVariableByteInteger {
     public static final int NOT_MINIMUM_BYTES = -3;
     private static final int CONTINUATION_BIT_MASK = 0x80;
     private static final int VALUE_MASK = 0x7f;
-    private static final int VALUE_BITS = 7;
+    private static final byte VALUE_BITS = 7;
     private static final int MAX_SHIFT = VALUE_BITS * 3;
     private static final int ONE_BYTE_MAX_VALUE = (1 << VALUE_BITS) - 1;
     private static final int TWO_BYTES_MAX_VALUE = (1 << (VALUE_BITS * 2)) - 1;
@@ -87,7 +87,7 @@ public static int decode(final @NotNull ByteBuf byteBuf) {
     public static void encode(int value, final @NotNull ByteBuf byteBuf) {
         do {
             int encodedByte = value & VALUE_MASK;
-            value >>>= 7;
+            value >>>= VALUE_BITS;
             if (value > 0) {
                 encodedByte |= CONTINUATION_BIT_MASK;
             }

src/main/java/com/hivemq/client/internal/mqtt/handler/publish/outgoing/MqttTopicAliasAutoMapping.java

@@ -100,7 +100,7 @@ public int onPublish(final @NotNull MqttTopicImpl topic) {
             }
             fullOverwriteTries = 0;
             if (fullOverwriteCost < OVERWRITE_COST_MAX) {
-                fullOverwriteCost += Math.min(OVERWRITE_COST_INC, OVERWRITE_COST_MAX - fullOverwriteCost);
+                fullOverwriteCost += (byte) Math.min(OVERWRITE_COST_INC, OVERWRITE_COST_MAX - fullOverwriteCost);
             }
             if (lowest.topicAlias != DEFAULT_NO_TOPIC_ALIAS) {
                 newEntry.setNewTopicAlias(lowest.topicAlias);
@@ -136,7 +136,7 @@ private void swapNewer(final @NotNull Entry entry, final long accessCounter) {
                 }
                 overwriteTries = 0;
                 if (overwriteCost < OVERWRITE_COST_MAX) {
-                    overwriteCost += Math.min(OVERWRITE_COST_INC, OVERWRITE_COST_MAX - overwriteCost);
+                    overwriteCost += (byte) Math.min(OVERWRITE_COST_INC, OVERWRITE_COST_MAX - overwriteCost);
                 }
                 entry.setNewTopicAlias(higher.topicAlias);
                 higher.topicAlias = DEFAULT_NO_TOPIC_ALIAS;