Fixup an out of date comment.
Test: n/a
Change-Id: Ieb5d18d479becb8c92cbf71a8bb7cd67f7c27dba
diff --git a/libc/include/sys/_system_properties.h b/libc/include/sys/_system_properties.h
index 67beb9a..744a45b 100644
--- a/libc/include/sys/_system_properties.h
+++ b/libc/include/sys/_system_properties.h
@@ -58,8 +58,8 @@
#define PROP_ERROR_SET_FAILED 0x0024
/*
-** Map the property area from the specified filename. This
-** method is for testing only.
+** This was previously for testing, but now that SystemProperties is its own testable class,
+** there is never a reason to call this function and its implementation simply returns -1.
*/
int __system_property_set_filename(const char* __filename);