vsh: Replace vshPrint macro with function

The macro would eat the first parameter. In some cases the format string
for vshPrint was eaten. In other cases the calls referenced variables
which did not exist in the given context. Avoid errors by doing compile
time checking.

tools/vsh.c

@@ -1720,6 +1720,21 @@ vshPrintExtra(vshControl *ctl, const char *format, ...)
 }
 
 
+void
+vshPrint(vshControl *ctl ATTRIBUTE_UNUSED, const char *format, ...)
+{
+    va_list ap;
+    char *str;
+
+    va_start(ap, format);
+    if (virVasprintfQuiet(&str, format, ap) < 0)
+        vshErrorOOM();
+    va_end(ap);
+    fputs(str, stdout);
+    VIR_FREE(str);
+}
+
+
 bool
 vshTTYIsInterruptCharacter(vshControl *ctl ATTRIBUTE_UNUSED,
                            const char chr ATTRIBUTE_UNUSED)