fix style issues

Author: SylvainJuge

instrumentation/vertx/vertx-sql-client/vertx-sql-client-5.0/javaagent/src/main/java/io/opentelemetry/javaagent/instrumentation/vertx/v5_0/sql/QueryExecutorInstrumentation.java

@@ -56,9 +56,9 @@ public static void onExit(@Advice.This Object queryExecutor) {
   public static class QueryAdvice {
     public static class AdviceScope {
       private final CallDepth callDepth;
-      private final @Nullable VertxSqlClientRequest otelRequest;
-      private final @Nullable Context context;
-      private final @Nullable Scope scope;
+      @Nullable private final VertxSqlClientRequest otelRequest;
+      @Nullable private final Context context;
+      @Nullable private final Scope scope;
 
       private AdviceScope(CallDepth callDepth) {
         this(callDepth, null, null, null);

instrumentation/vertx/vertx-sql-client/vertx-sql-client-5.0/javaagent/src/main/java/io/opentelemetry/javaagent/instrumentation/vertx/v5_0/sql/SqlClientBaseInstrumentation.java

@@ -51,8 +51,7 @@ public static void onExit(@Advice.This SqlClientBase sqlClientBase) {
   public static class QueryAdvice {
     @Advice.OnMethodEnter(suppress = Throwable.class)
     public static CallDepth onEnter(@Advice.This SqlClientBase sqlClientBase) {
-      CallDepth callDepth = null;
-      callDepth = CallDepth.forClass(SqlClientBase.class);
+      CallDepth callDepth = CallDepth.forClass(SqlClientBase.class);
       if (callDepth.getAndIncrement() > 0) {
         return callDepth;
       }