revert to use of g_free to make future qemu integrations easier (#695)

* revert to use of g_free to make future qemu integrations easier

* bracing

qemu/include/glib_compat.h

@@ -106,7 +106,7 @@ GHashTable *g_hash_table_ref(GHashTable *hash_table);
 guint g_hash_table_size(GHashTable *hash_table);
 
 /* replacement for g_malloc dependency */
-#define g_free(x) free(x)
+void g_free(void *ptr);
 void *g_malloc(size_t size);
 void *g_malloc0(size_t size);
 void *g_try_malloc0(size_t size);

qemu/include/hw/arm/arm.h

@@ -57,7 +57,7 @@ struct arm_boot_info {
      * sets get_dtb. This will only be used if no dtb file is provided
      * by the user. On success, sets *size to the length of the created
      * dtb, and returns a pointer to it. (The caller must free this memory
-     * with free() when it has finished with it.) On failure, returns NULL.
+     * with g_free() when it has finished with it.) On failure, returns NULL.
      */
     void *(*get_dtb)(const struct arm_boot_info *info, int *size);
     /* if a board needs to be able to modify a device tree provided by

qemu/include/qemu/osdep.h

@@ -210,7 +210,7 @@ void fips_set_state(bool requested);
 bool fips_get_state(void);
 
 /* Get the saved exec dir.
- * Caller needs to release the returned string by free() */
+ * Caller needs to release the returned string by g_free() */
 char *qemu_get_exec_dir(void);
 
 /**

qemu/include/qom/object.h

@@ -1125,7 +1125,7 @@ void object_property_add_link(Object *obj, const char *name,
  * @obj: the object to add a property to
  * @name: the name of the property
  * @get: the getter or NULL if the property is write-only.  This function must
- *   return a string to be freed by free().
+ *   return a string to be freed by g_free().
  * @set: the setter or NULL if the property is read-only
  * @errp: if an error occurs, a pointer to an area to store the error
  *