JBR-5107, JBR-5114: SIGILL/OOM from Java_sun_lwawt_macosx_LWCToolkit_getKeyboardLayoutNativeId.

A theoretical fix, it should:
- Catch any NSException (as it was initially expected);
- Probably fix possible memory leaks (by moving the layoutId var inside autoreleasepool).

src/java.desktop/macosx/classes/sun/lwawt/macosx/CPlatformResponder.java

@@ -181,7 +181,11 @@ final class CPlatformResponder {
     };
 
     private static boolean isCyrillicKeyboardLayout() {
-        return Arrays.stream(cyrillicKeyboardLayouts).anyMatch(l -> l.equals(LWCToolkit.getKeyboardLayoutId()));
+        final var currentLayout = LWCToolkit.getKeyboardLayoutId();
+        if ( (currentLayout == null) || currentLayout.isEmpty() ) {
+            return false;
+        }
+        return Arrays.asList(cyrillicKeyboardLayouts).contains(currentLayout);
     }
 
     /**

src/java.desktop/macosx/native/libawt_lwawt/awt/LWCToolkit.m

@@ -891,14 +891,26 @@ Java_sun_lwawt_macosx_LWCToolkit_isEmbedded
 JNIEXPORT jstring JNICALL
 JNICALL Java_sun_lwawt_macosx_LWCToolkit_getKeyboardLayoutNativeId(JNIEnv *env, jclass cls)
 {
-    __block NSString * layoutId = NULL;
+    jstring result = NULL;
+
     JNI_COCOA_ENTER(env);
+    NSMutableString * const layoutId = [NSMutableString stringWithCapacity:0];
+    if (layoutId == NULL) {
+        return NULL;
+    }
+
     [ThreadUtilities performOnMainThreadWaiting:YES block:^(){
         TISInputSourceRef source = TISCopyCurrentKeyboardInputSource();
-        layoutId = TISGetInputSourceProperty(source, kTISPropertyInputSourceID);
+        NSString * const layoutIdLocal = TISGetInputSourceProperty(source, kTISPropertyInputSourceID);
+        if (layoutIdLocal != NULL) {
+            [layoutId appendString:layoutIdLocal];
+        }
     }];
+
+    result = NSStringToJavaString(env, layoutId);
     JNI_COCOA_EXIT(env);
-    return NSStringToJavaString(env, layoutId);
+
+    return result;
 }
 
 /*