[basic.life] Remove spurious commas

Fixes NB US 18-035 (C++26 CD).

Author: jensmaurer

source/basic.tex

@@ -3914,9 +3914,8 @@
 \begin{footnote}
 For example, before the dynamic initialization of
 an object with static storage duration\iref{basic.start.dynamic}.
-
 \end{footnote}
-or, after the lifetime of an object has ended and before the storage
+or after the lifetime of an object has ended and before the storage
 which the object occupied is reused or released, any pointer that represents the address of
 the storage location where the object will be or was located may be
 used but only in limited ways.
@@ -3981,7 +3980,7 @@
 
 \pnum
 Similarly, before the lifetime of an object has started but after the
-storage which the object will occupy has been allocated or, after the
+storage which the object will occupy has been allocated or after the
 lifetime of an object has ended and before the storage which the object
 occupied is reused or released, any glvalue that refers to the original
 object may be used but only in limited ways.