Debugger: Remove arg for a 0 hunk in disassembly.

Change-Id: If519893dfcf72b034a133954e01ebfcfdbf9253d
Reviewed-by: hjk <hjk@theqtcompany.com>

src/plugins/debugger/disassemblerlines.cpp

@@ -237,7 +237,7 @@ QString DisassemblerLine::toString(int maxOp) const
         if (hunk)
             str += _(" [%1]").arg(hunk);
         else
-            str += _("    ").arg(hunk);
+            str += _("    ");
         str += data;
     } else {
         str += someSpace;