bug#64590: Patch: fix gud-go in gdb-mi.el

[Wang Diancheng <dianchengwang@gmail.com>]

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Hi,
document of gud-go says "Start or continue execution.  Use a prefix to
specify arguments." but it always prompts for program arguments
regardless of whether "C-u" is pressed because arg is numeric prefix
here. The attachment is a patch to change gud-go just prompts if
prefix is not 1.

[-- Attachment #2: gud-go.patch --]
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diff --git a/lisp/progmodes/gdb-mi.el b/lisp/progmodes/gdb-mi.el
index 199be3318a1..e81c1452c55 100644
--- a/lisp/progmodes/gdb-mi.el
+++ b/lisp/progmodes/gdb-mi.el
@@ -987,14 +987,14 @@ gdb
 	   "\C-u" "Continue to current line or address.")
   (gud-def
    gud-go (progn
-            (when arg
+            (when (/= arg 1)
               (gud-call (concat "-exec-arguments "
                                 (read-string "Arguments to exec-run: "))))
             (gud-call
              (if gdb-active-process
                  (gdb-gud-context-command "-exec-continue")
                "-exec-run")))
-   "\C-v" "Start or continue execution.  Use a prefix to specify arguments.")
+   "\C-v" "Start or continue execution.  Use a prefix other than 1 to specify arguments.")
 
   ;; For debugging Emacs only.
   (gud-def gud-pp