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

[Sergio Durigan Junior <sergiodj@sourceware.org>]

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=47a536d940d2f2bccfec51539b857da06ebc429e

commit 47a536d940d2f2bccfec51539b857da06ebc429e
Author: Sergio Durigan Junior <sergiodj@redhat.com>
Date:   Thu Aug 29 16:11:45 2019 -0400

    Remove "\nError: " suffix from nat/fork-inferior.c:trace_start_error warning message
    
    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
    
    gdb/ChangeLog:
    2019-08-30  Sergio Durigan Junior  <sergiodj@redhat.com>
    
    	* nat/fork-inferior.c (trace_start_error): Remove "\nError: "
    	suffix from warning message.

Diff:
---
 gdb/ChangeLog           | 5 +++++
 gdb/nat/fork-inferior.c | 2 +-
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 2cc7b58..ebcfae1 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,8 @@
+2019-08-30  Sergio Durigan Junior  <sergiodj@redhat.com>
+
+	* nat/fork-inferior.c (trace_start_error): Remove "\nError: "
+	suffix from warning message.
+
 2019-08-30  Tom Tromey  <tom@tromey.com>
 
 	* tui/tui-winsource.h (struct tui_source_window_base)
diff --git a/gdb/nat/fork-inferior.c b/gdb/nat/fork-inferior.c
index 68b51aa..355e9be 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);