[PATCH] Remove "\nError: " suffix from nat/fork-inferior.c:trace_start_error warning message

[Sergio Durigan Junior <sergiodj at redhat dot com>]

Rationale: https://sourceware.org/ml/gdb-patches/2019-08/msg00651.html

This very simple patch removes the "\nError: " suffix from the warning
message printed by nat/fork-inferior.c:trace_start_error.  This proved
to just pollute the screen, causing things like:

  Starting program: /usr/bin/true
  warning: Could not trace the inferior process.
  Error:
  warning: ptrace: Permission denied

This "Error: " string is not useful at all, and can confuse things,
therefore let's just remove it and simplify the resulting messages:

  Starting program: /usr/bin/true
  warning: Could not trace the inferior process.
  warning: ptrace: Permission denied

2019-08-29  Sergio Durigan Junior  <sergiodj@redhat.com>

	* nat/fork-inferior.c (trace_start_error): Remove "\nError: "
	suffix from warning message.
---
 gdb/nat/fork-inferior.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gdb/nat/fork-inferior.c b/gdb/nat/fork-inferior.c
index 68b51aa814..355e9bef43 100644
--- a/gdb/nat/fork-inferior.c
+++ b/gdb/nat/fork-inferior.c
@@ -580,7 +580,7 @@ trace_start_error (const char *fmt, ...)
   va_list ap;
 
   va_start (ap, fmt);
-  warning ("Could not trace the inferior process.\nError: ");
+  warning ("Could not trace the inferior process.");
   vwarning (fmt, ap);
   va_end (ap);
 
-- 
2.21.0