Revert r74048.
diff --git a/pyconfig.h.in b/pyconfig.h.in
index 0b0617c..ce1ae08 100644
--- a/pyconfig.h.in
+++ b/pyconfig.h.in
@@ -923,13 +923,13 @@
/* The size of `long long', as computed by sizeof. */
#undef SIZEOF_LONG_LONG
-/* The size of `off_t', as computed by sizeof. */
+/* The number of bytes in an off_t. */
#undef SIZEOF_OFF_T
/* The size of `pid_t', as computed by sizeof. */
#undef SIZEOF_PID_T
-/* The size of `pthread_t', as computed by sizeof. */
+/* The number of bytes in a pthread_t. */
#undef SIZEOF_PTHREAD_T
/* The size of `short', as computed by sizeof. */
@@ -938,7 +938,7 @@
/* The size of `size_t', as computed by sizeof. */
#undef SIZEOF_SIZE_T
-/* The size of `time_t', as computed by sizeof. */
+/* The number of bytes in a time_t. */
#undef SIZEOF_TIME_T
/* The size of `uintptr_t', as computed by sizeof. */