Android: Fix memory leak in DnssdImpl.cpp ChipDnssdStopBrowse() (#32855)

* Android: Fix memory leak in ChipDnssdStopBrowse - Addressed comment by bzbarsky-apple

* Addressed comment by bzbarsky-apple simplified

Author: pgregorr-amazon

src/platform/android/DnssdImpl.cpp

@@ -219,14 +219,14 @@ CHIP_ERROR ChipDnssdStopBrowse(intptr_t browseIdentifier)
 
     env->CallVoidMethod(sBrowserObject.ObjectRef(), sStopBrowseMethod, reinterpret_cast<jlong>(ctx->callback));
 
+    chip::Platform::Delete(ctx);
     if (env->ExceptionCheck())
     {
         ChipLogError(Discovery, "Java exception in ChipDnssdStopBrowse");
         env->ExceptionDescribe();
         env->ExceptionClear();
         return CHIP_JNI_ERROR_EXCEPTION_THROWN;
     }
-    chip::Platform::Delete(ctx);
 
     return CHIP_NO_ERROR;
 }