[PATCH] Fix crash in Ada "catch exception"

[Tom Tromey <tromey@adacore.com>]

PR ada/24919 concerns a crash that Tom de Vries noticed when running
the "catch_ex" Ada test case.  He sent a test executable and tracked
this down to commit f21c2bd7b7 ("Fix Fortran regression with variables
in nested functions").

Looking at that patch, you can see the obvious error:

    -  return 0;
    +  return true;

Oops!  This patch fixes the bug.

Tested on x86-64 Fedora 29.

gdb/ChangeLog
2019-09-20  Tom Tromey  <tromey@adacore.com>

	PR ada/24919:
	* block.c (contained_in): Fix final return value.
---
 gdb/ChangeLog | 5 +++++
 gdb/block.c   | 2 +-
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/gdb/block.c b/gdb/block.c
index ca4dc22cf30..5ba44d47ba7 100644
--- a/gdb/block.c
+++ b/gdb/block.c
@@ -86,7 +86,7 @@ contained_in (const struct block *a, const struct block *b,
     }
   while (a != NULL);
 
-  return true;
+  return false;
 }
 
 
-- 
2.20.1