core: fix null pointer error in try/catch processing

jadx-core/src/main/java/jadx/core/dex/visitors/regions/ProcessTryCatchRegions.java

@@ -72,12 +72,15 @@ public class ProcessTryCatchRegions extends AbstractRegionVisitor {
 			}
 			BitSet bs = new BitSet(mth.getBasicBlocks().size());
 			for (ExceptionHandler excHandler : tb.getHandlers()) {
-				SplitterBlockAttr splitter = excHandler.getHandlerBlock().get(AType.SPLITTER_BLOCK);
+				BlockNode handlerBlock = excHandler.getHandlerBlock();
+				if (handlerBlock != null) {
+					SplitterBlockAttr splitter = handlerBlock.get(AType.SPLITTER_BLOCK);
 					if (splitter != null) {
 						BlockNode block = splitter.getBlock();
 						bs.set(block.getId());
 					}
 				}
+			}
 			List<BlockNode> domBlocks = BlockUtils.bitSetToBlocks(mth, bs);
 			BlockNode domBlock;
 			if (domBlocks.size() != 1) {
@@ -164,7 +167,9 @@ public class ProcessTryCatchRegions extends AbstractRegionVisitor {
 
 	private static boolean isHandlerPath(TryCatchBlock tb, IContainer cont) {
 		for (ExceptionHandler h : tb.getHandlers()) {
-			if (RegionUtils.hasPathThroughBlock(h.getHandlerBlock(), cont)) {
+			BlockNode handlerBlock = h.getHandlerBlock();
+			if (handlerBlock != null
+					&& RegionUtils.hasPathThroughBlock(handlerBlock, cont)) {
 				return true;
 			}
 		}