cwCommonImpl.h/cpp : Added #include <ccytpe>. Check for null label in labelToId()

cwCommonImpl.cpp

@@ -28,6 +28,8 @@ const char* cw::idToLabel( const idLabelPair_t* array, unsigned id, unsigned eol
 unsigned cw::labelToId( const idLabelPair_t* array, const char* label, unsigned eolId )
 {
   const idLabelPair_t* p = array;
+
+  if( label != nullptr )
     for(; p->id != eolId; ++p)
       if( std::strcmp(label,p->label) == 0 )
         return p->id;

cwCommonImpl.h

@@ -17,6 +17,7 @@
 #include <atomic>
 #include <cstdint>
 #include <cmath>
+#include <cctype>
 #include <complex>
 #include <type_traits>