core: fix processing try/catch in loop

jadx-core/src/main/java/jadx/core/dex/regions/loops/LoopRegion.java

@@ -20,7 +20,7 @@ public final class LoopRegion extends AbstractRegion {
 	private final BlockNode conditionBlock;
 	// instruction which must be executed before condition in every loop
 	private BlockNode preCondition;
-	private IContainer body;
+	private IRegion body;
 	private final boolean conditionAtEnd;
 
 	private LoopType type;
@@ -44,11 +44,11 @@ public final class LoopRegion extends AbstractRegion {
 		return conditionBlock;
 	}
 
-	public IContainer getBody() {
+	public IRegion getBody() {
 		return body;
 	}
 
-	public void setBody(IContainer body) {
+	public void setBody(IRegion body) {
 		this.body = body;
 	}
 
@@ -144,6 +144,11 @@ public final class LoopRegion extends AbstractRegion {
 		return Collections.unmodifiableList(all);
 	}
 
+	@Override
+	public boolean replaceSubBlock(IContainer oldBlock, IContainer newBlock) {
+		return false;
+	}
+
 	@Override
 	public String baseString() {
 		return body.baseString();

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

@@ -7,6 +7,7 @@ import jadx.core.dex.nodes.IRegion;
 import jadx.core.dex.nodes.MethodNode;
 import jadx.core.dex.regions.AbstractRegion;
 import jadx.core.dex.regions.Region;
+import jadx.core.dex.regions.loops.LoopRegion;
 import jadx.core.dex.trycatch.CatchAttr;
 import jadx.core.dex.trycatch.ExceptionHandler;
 import jadx.core.dex.trycatch.TryCatchBlock;
@@ -121,7 +122,13 @@ public class ProcessTryCatchRegions extends AbstractRegionVisitor {
 	/**
 	 * Extract all block dominated by 'dominator' to separate region and mark as try/catch block
 	 */
-	private static boolean wrapBlocks(IRegion region, TryCatchBlock tb, BlockNode dominator) {
+	private static boolean wrapBlocks(IRegion replaceRegion, TryCatchBlock tb, BlockNode dominator) {
+		IRegion region = replaceRegion;
+		if (region instanceof LoopRegion) {
+			LoopRegion loop = (LoopRegion) region;
+			region = loop.getBody();
+		}
+
 		Region newRegion = new Region(region);
 		List<IContainer> subBlocks = region.getSubBlocks();
 		for (IContainer cont : subBlocks) {