abis/mlibc: Fix deprecation notice in utsname.h
#define _ABIBITS_UTSNAME_T_H
#if __MLIBC_BUILDING_MLIBC
-#warning abis/mlibc/wait.h is deprecated. We suggest to use abis/linux/wait.h instead. \
+#warning abis/mlibc/utsname.h is deprecated. We suggest to use abis/linux/utsname.h instead. \
Note that this will potentially require kernel changes.
#endif
