use java/lang/IllegalArgumentException for pid <= 0

per Lorenzo's request on

https://android-review.git.corp.google.com/c/platform/packages/modules/Connectivity/+/2563471

Test: TreeHugger
Signed-off-by: Maciej Żenczykowski <maze@google.com>
Change-Id: I2b3e28073bcfd7341bb3ad29471b69c830f81d95
diff --git a/service/jni/com_android_server_connectivity_ClatCoordinator.cpp b/service/jni/com_android_server_connectivity_ClatCoordinator.cpp
index d966070..c125bd6 100644
--- a/service/jni/com_android_server_connectivity_ClatCoordinator.cpp
+++ b/service/jni/com_android_server_connectivity_ClatCoordinator.cpp
@@ -475,7 +475,7 @@
 static void com_android_server_connectivity_ClatCoordinator_stopClatd(JNIEnv* env, jclass clazz,
                                                                       jint pid) {
     if (pid <= 0) {
-        jniThrowExceptionFmt(env, "java/io/IOException", "Invalid pid");
+        jniThrowExceptionFmt(env, "java/lang/IllegalArgumentException", "Invalid pid");
         return;
     }