core: fix exception handler jumps (#320)

jadx-core/src/main/java/jadx/core/dex/visitors/blocksmaker/BlockProcessor.java

@@ -418,8 +418,9 @@ public class BlockProcessor extends AbstractVisitor {
 				boolean change = false;
 				for (Edge edge : edges) {
 					BlockNode target = edge.getTarget();
-					if (!target.contains(AFlag.SYNTHETIC)) {
-						BlockSplitter.insertBlockBetween(mth, edge.getSource(), target);
+					BlockNode source = edge.getSource();
+					if (!target.contains(AFlag.SYNTHETIC) && !source.contains(AFlag.SYNTHETIC)) {
+						BlockSplitter.insertBlockBetween(mth, source, target);
 						change = true;
 					}
 				}

jadx-core/src/main/java/jadx/core/dex/visitors/blocksmaker/BlockSplitter.java

@@ -91,6 +91,7 @@ public class BlockSplitter extends AbstractVisitor {
 					startNew = isSplitByJump(prevInsn, insn)
 							|| SEPARATE_INSNS.contains(insn.getType())
 							|| isDoWhile(blocksMap, curBlock, insn)
+							|| insn.contains(AType.EXC_HANDLER)
 							|| prevInsn.contains(AFlag.TRY_LEAVE)
 							|| prevInsn.getType() == InsnType.MOVE_EXCEPTION;
 					if (startNew) {