[directory_iterator.members] [rec.dir.itr.members] fix "skip_permissions_denied"

Author: jwakely

source/iostreams.tex

@@ -12669,7 +12669,7 @@
 elements representing the files in the directory, if any; otherwise the end
 iterator. However, if
 \begin{codeblock}
-(options & directory_options::skip_permissions_denied) != directory_options::none
+(options & directory_options::skip_permission_denied) != directory_options::none
 \end{codeblock}
 and construction encounters an error indicating
 that permission to access \tcode{p} is denied, constructs the end iterator
@@ -12846,7 +12846,7 @@
 entry in the directory \tcode{p} resolves to, if any; otherwise, the end iterator.
 However, if
 \begin{codeblock}
-(options & directory_options::skip_permissions_denied) != directory_options::none
+(options & directory_options::skip_permission_denied) != directory_options::none
 \end{codeblock}
 and construction encounters an error indicating
 that permission to access \tcode{p} is denied, constructs the end iterator
@@ -13020,7 +13020,7 @@
 then either directory \tcode{(*this)->path()} is recursively iterated into or,
 if
 \begin{codeblock}
-(options() & directory_options::skip_permissions_denied) != directory_options::none
+(options() & directory_options::skip_permission_denied) != directory_options::none
 \end{codeblock}
 and an error occurs indicating that permission to access directory \tcode{(*this)->path()} is denied,
 then directory \tcode{(*this)->path()} is