gdb/gdbsupport: make xstrprintf and xstrvprintf return a unique_ptr

The motivation is to reduce the number of places where unmanaged
pointers are returned from allocation type routines.  All of the
callers are updated.

There should be no user visible changes after this commit.

1 files changed, 2 insertions, 2 deletions

diff --git a/gdb/riscv-tdep.c b/gdb/riscv-tdep.c
index a6a64d3..522eaa7 100644
--- a/gdb/riscv-tdep.c
+++ b/gdb/riscv-tdep.c
@@ -566,8 +566,8 @@ private:
     for (auto &reg : m_registers)
       {
 	int csr_num = reg.regnum - RISCV_FIRST_CSR_REGNUM;
-	const char *alias = xstrprintf ("csr%d", csr_num);
-	reg.names.push_back (alias);
+	gdb::unique_xmalloc_ptr<char> alias = xstrprintf ("csr%d", csr_num);
+	reg.names.push_back (alias.release ());
       }
   }
 };