[LyX/master] Fix isSpace for docstring

[Yuriy Skalko]

commit 69f838bbf3e5c1cd0eb1a64dfbf8de469dc10d97
Author: Yuriy Skalko <yuriy.skalko at gmail.com>
Date:   Sat Oct 24 11:03:36 2020 +0300

    Fix isSpace for docstring
---
 src/insets/InsetBibtex.cpp |    2 +-
 src/xml.cpp                |    2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/insets/InsetBibtex.cpp b/src/insets/InsetBibtex.cpp
index bee485e..f606444 100644
--- a/src/insets/InsetBibtex.cpp
+++ b/src/insets/InsetBibtex.cpp
@@ -1276,7 +1276,7 @@ void InsetBibtex::docbook(XMLStream & xs, OutputParams const &) const
 				xs << xml::StartTag("keywordset") << xml::CR();
 				for (auto & kw: keywords) {
 					kw.erase(kw.begin(), std::find_if(kw.begin(), kw.end(),
-					                                  [](int c) {return !std::isspace(c);}));
+					                                  [](char_type c) {return !lyx::isSpace(c);}));
 					xs << xml::StartTag("keyword");
 					xs << kw;
 					xs << xml::EndTag("keyword");
diff --git a/src/xml.cpp b/src/xml.cpp
index dda39a4..f96a19c 100644
--- a/src/xml.cpp
+++ b/src/xml.cpp
@@ -143,7 +143,7 @@ docstring CompTag::writeTag() const
 		// automatically.
 		docstring attributes = escapeString(attr_, XMLStream::ESCAPE_NONE);
 		attributes.erase(attributes.begin(), std::find_if(attributes.begin(), attributes.end(),
-                                                          [](int c) {return !std::isspace(c);}));
+                                                          [](char_type c) {return !isSpace(c);}));
 		if (!attributes.empty()) {
 			output += ' ' + attributes;
 		}