ppc-opc.c non-ascii string

[Alan Modra]

Fix a gettext complaint.

	* ppc-opc.c (insert_sr): Don't use non-ascii dash.

diff --git a/opcodes/ppc-opc.c b/opcodes/ppc-opc.c
index af96fbba3fc..2750aa94c57 100644
--- a/opcodes/ppc-opc.c
+++ b/opcodes/ppc-opc.c
@@ -1825,7 +1825,7 @@ insert_sr (uint64_t insn,
 	   const char **errmsg)
 {
   if (value < 0 || value > 23)
-    *errmsg = _("invalid SR value (must be 0–23)");
+    *errmsg = _("invalid SR value (must be 0-23)");
   return insn | ((value & 0x1f) << 11);
 }
 

-- 
Alan Modra