Modify async for test to avoid known try-except problem with trailing unnecessary continue when the try-except is not followed by any other statements.

Add an xfail test to capture this failing scenario.

tests/input/async_for.py

@@ -63,6 +63,8 @@ async def tryBlocks():
                 STUFF
             except MyException:
                 running = False
+            BLOCK_AFTER
+            
     except MyException2:
         OUTEREXCEPT
 

tests/input/loop_try_except.py

@@ -0,0 +1,20 @@
+async def myFunc():
+    async for b in c:
+        try:
+            STUFF
+        except MyException:
+            running = False
+
+for b in c:
+    stuff
+    try:
+        STUFF
+    except MyException:
+        running = False
+
+while a:
+    stuff
+    try:
+        STUFF
+    except MyException:
+        running = False

tests/tokenized/async_for.txt

@@ -107,12 +107,11 @@ try : <EOL>
 <INDENT>
 STUFF <EOL>
 <OUTDENT>
-continue <EOL>
 except MyException : <EOL>
 <INDENT>
 running = False <EOL>
-continue <EOL>
 <OUTDENT>
+BLOCK_AFTER <EOL>
 <OUTDENT>
 <OUTDENT>
 except MyException2 : <EOL>

tests/tokenized/loop_try_except.txt

@@ -0,0 +1,36 @@
+async def myFunc ( ) : <EOL>
+<INDENT>
+async for b in c : <EOL>
+<INDENT>
+try : <EOL>
+<INDENT>
+STUFF <EOL>
+<OUTDENT>
+except MyException : <EOL>
+<INDENT>
+running = False <EOL>
+<OUTDENT>
+<OUTDENT>
+<OUTDENT>
+for b in c : <EOL>
+<INDENT>
+stuff <EOL>
+try : <EOL>
+<INDENT>
+STUFF <EOL>
+<OUTDENT>
+except MyException : <EOL>
+<INDENT>
+running = False <EOL>
+<OUTDENT>
+<OUTDENT>
+while a : <EOL>
+<INDENT>
+stuff <EOL>
+try : <EOL>
+<INDENT>
+STUFF <EOL>
+<OUTDENT>
+except MyException : <EOL>
+<INDENT>
+running = False <EOL>