Free the native memory associated with the new TargetMethodArgumentsToLoad array in the Marshal'ed NativeCallTargetDefinition

Author: zacharycmontoya

tracer/src/Datadog.Trace/ClrProfiler/NativeCallTargetDefinition.cs

@@ -112,6 +112,10 @@ public void Dispose()
             }
 
             Marshal.FreeHGlobal(TargetSignatureTypes);
+            if (TargetMethodArgumentsToLoadLength > 0)
+            {
+                Marshal.FreeHGlobal(TargetMethodArgumentsToLoad);
+            }
         }
     }
 }