[flat.{,multi}map.cons] Clarify that the state before the move is meant.

Author: tkoeppe

source/containers.tex

@@ -14833,9 +14833,9 @@
 
 \pnum
 \complexity
-Linear in $N$ if the container arguments are already sorted with respect
-to \tcode{value_comp()} and otherwise $N \log N$,
-where $N$ is \tcode{key_cont.size()}.
+Linear in $N$ if the container arguments are already sorted
+with respect to \tcode{value_comp()} and otherwise $N \log N$,
+where $N$ is the value of \tcode{key_cont.size()} before this call.
 \end{itemdescr}
 
 \indexlibraryctor{flat_map}%
@@ -15933,9 +15933,8 @@
 \pnum
 \complexity
 Linear in $N$ if the container arguments are already sorted
-with respect to \tcode{value_comp()} and
-otherwise $N \log N$,
-where $N$ is \tcode{key_cont.size()}.
+with respect to \tcode{value_comp()} and otherwise $N \log N$,
+where $N$ is the value of \tcode{key_cont.size()} before this call.
 \end{itemdescr}
 
 \indexlibraryctor{flat_multimap}%