45304: Do execute the always block even when the try/always block itself is the last command.

Fixes the test added in the previous commit (workers/45305).

ChangeLog

@@ -1,3 +1,8 @@
+2020-01-16  Daniel Shahaf  <danielsh@apache.org>
+
+	* 45304: Src/loop.c, Test/A01grammar.ztst: Do execute the always
+	block even when the try/always block itself is the last command.
+
 2020-01-15  dana  <dana@dana.is>
 
 	* 45292: Test/D02glob.ztst: Add regression test for macOS stat(2)

Src/loop.c

@@ -742,7 +742,7 @@ exectry(Estate state, int do_exec)
 
     /* The :try clause */
     ++try_tryflag;
-    execlist(state, 1, do_exec);
+    execlist(state, 1, 0);
     --try_tryflag;
 
     /* Don't record errflag here, may be reset.  However, */

Test/A01grammar.ztst

@@ -930,5 +930,5 @@ F:Note that the behaviour of 'exit' inside try-list inside a function is unspeci
 >or false
 
  $ZTST_testdir/../Src/zsh -fc '{ ( ) } always { echo foo }'
--f:exec last command optimization inhibited for try/always
+0:exec last command optimization inhibited for try/always
 >foo