Fix(avs): Incorrect function signature

After getting doubts, I looked this one up again on the
assembly. The decompiled output confused me
and no actual value is being returned there.

Author: icex2

src/imports/avs.h

@@ -221,7 +221,7 @@ int property_set_flag(struct property *prop, int flags, int mask);
 void property_destroy(struct property *prop);
 
 avs_error property_get_error(struct property *prop);
-struct property *property_clear_error(struct property *prop);
+void property_clear_error(struct property *prop);
 
 int property_psmap_import(
     struct property *prop,