qemu-option: introduce qemu_opt_set_err()

This is like qemu_opt_set(), except that it takes an Error argument.

This new function allows for a incremental conversion of code using
qemu_opt_set().
Signed-off-by: NLuiz Capitulino <lcapitulino@redhat.com>
Reviewed-By: NLaszlo Ersek <lersek@redhat.com>

qemu-option.c

@@ -669,6 +669,12 @@ int qemu_opt_set(QemuOpts *opts, const char *name, const char *value)
     return 0;
 }
 
+void qemu_opt_set_err(QemuOpts *opts, const char *name, const char *value,
+                      Error **errp)
+{
+    opt_set(opts, name, value, false, errp);
+}
+
 int qemu_opt_set_bool(QemuOpts *opts, const char *name, bool val)
 {
     QemuOpt *opt;

qemu-option.h

@@ -111,6 +111,8 @@ bool qemu_opt_get_bool(QemuOpts *opts, const char *name, bool defval);
 uint64_t qemu_opt_get_number(QemuOpts *opts, const char *name, uint64_t defval);
 uint64_t qemu_opt_get_size(QemuOpts *opts, const char *name, uint64_t defval);
 int qemu_opt_set(QemuOpts *opts, const char *name, const char *value);
+void qemu_opt_set_err(QemuOpts *opts, const char *name, const char *value,
+                      Error **errp);
 int qemu_opt_set_bool(QemuOpts *opts, const char *name, bool val);
 typedef int (*qemu_opt_loopfunc)(const char *name, const char *value, void *opaque);
 int qemu_opt_foreach(QemuOpts *opts, qemu_opt_loopfunc func, void *opaque,