passing null c-string to std::string is undef. behavior

Change-Id: I54a0037ab133a91a8926de8e9cc8a91b61c01645

1 files changed, 2 insertions, 2 deletions

diff --git a/src/lib/ABWContentCollector.cpp b/src/lib/ABWContentCollector.cpp
index 24502b0..0c7d102 100644
--- a/src/lib/ABWContentCollector.cpp
+++ b/src/lib/ABWContentCollector.cpp
@@ -796,8 +796,8 @@ void libabw::ABWContentCollector::collectHeaderFooter(const char *id, const char
 
 void libabw::ABWContentCollector::collectPageSize(const char *width, const char *height, const char *units, const char * /* pageScale */)
 {
-  std::string widthStr(width);
-  std::string heightStr(height);
+  std::string widthStr(width ? width : "");
+  std::string heightStr(height ? height : "");
   if (units)
   {
     widthStr.append(units);