fix(jni): enabled schema list always showed the previous settings

SwitcherSettings helper class cannot be new as static variable, otherwise it will not deinit in the function scope, leading to be the previous settings read in the next time.

Author: WhiredPlanck

app/src/main/jni/librime_jni/levers.cc

@@ -67,21 +67,21 @@ class SwitcherSettings {
 extern "C" JNIEXPORT jobjectArray JNICALL
 Java_com_osfans_trime_core_Rime_getAvailableRimeSchemaList(JNIEnv *env,
                                                            jclass /* thiz */) {
-  static SwitcherSettings switcher;
+  SwitcherSettings switcher;
   return rimeSchemaListToJObjectArray(env, switcher.availableSchemas());
 }
 
 extern "C" JNIEXPORT jobjectArray JNICALL
 Java_com_osfans_trime_core_Rime_getSelectedRimeSchemaList(JNIEnv *env,
                                                           jclass /* thiz */) {
-  static SwitcherSettings switcher;
+  SwitcherSettings switcher;
   return rimeSchemaListToJObjectArray(env, switcher.selectedSchemas());
 }
 
 extern "C" JNIEXPORT jboolean JNICALL
 Java_com_osfans_trime_core_Rime_selectRimeSchemas(JNIEnv *env,
                                                   jclass /* thiz */,
                                                   jobjectArray array) {
-  static SwitcherSettings switcher;
+  SwitcherSettings switcher;
   return switcher.selectSchemas(stringArrayToStringVector(env, array));
 }