ada: Use std::string in print_dynamic_range_bound

Replace this usage of GROW_VECT with an std::string.  I don't think
there's a reason for this variable to be static, other than it was
cumbersome to manage its lifetime (i.e. use a cleanup) before.

Tested by comparing the gdb.ada/*.exp test results before and after the
patch.

gdb/ChangeLog:

	* ada-typeprint.c (print_dynamic_range_bound): Use std::string.

1 files changed, 3 insertions, 7 deletions

diff --git a/gdb/ada-typeprint.c b/gdb/ada-typeprint.c
index 2224bb3d79f..0d1f9dc117c 100644
--- a/gdb/ada-typeprint.c
+++ b/gdb/ada-typeprint.c
@@ -253,15 +253,11 @@ static void
 print_dynamic_range_bound (struct type *type, const char *name, int name_len,
 			   const char *suffix, struct ui_file *stream)
 {
-  static char *name_buf = NULL;
-  static size_t name_buf_len = 0;
   LONGEST B;
+  std::string name_buf (name, name_len);
+  name_buf += suffix;
 
-  GROW_VECT (name_buf, name_buf_len, name_len + strlen (suffix) + 1);
-  strncpy (name_buf, name, name_len);
-  strcpy (name_buf + name_len, suffix);
-
-  if (get_int_var_value (name_buf, B))
+  if (get_int_var_value (name_buf.c_str (), B))
     ada_print_scalar (type, B, stream);
   else
     fprintf_filtered (stream, "?");