Muzzle: do not generate references for primitive arrays in method body (#8361)

Author: amarziali

dd-java-agent/agent-tooling/src/main/java/datadog/trace/agent/tooling/muzzle/ReferenceCreator.java

@@ -390,6 +390,9 @@ public void visitMethodInsn(
 
     @Override
     public void visitTypeInsn(final int opcode, final String stype) {
+      if (ignoreReference(stype)) {
+        return;
+      }
       Type type = underlyingType(Type.getObjectType(stype));
 
       if (ignoreReference(type.getInternalName())) {

dd-java-agent/agent-tooling/src/test/java/datadog/trace/agent/tooling/muzzle/TestAdviceClasses.java

@@ -16,6 +16,10 @@ public static void methodBodyAdvice() {
       a.b.aMethodWithArrays(new String[0]);
       B.aStaticMethod();
       A.staticB.aMethod("bar");
+      Object barr = new byte[0];
+      if (barr instanceof byte[]) {
+        barr = null;
+      }
     }
 
     public static class A {