address some cppcheck reports

alib2std/src/extensions/allocFix.hpp

@@ -46,6 +46,7 @@ public:
 	AllocFix ( ) {
 		// just to make sure the allocator constructor exists
 		static Alloc alloc;
+		(void) alloc; // make unused variable warning go away
 	}
 };

alib2std/src/extensions/container/map.hpp

@@ -289,8 +289,8 @@ public:
 	 */
 	template < class K >
 	auto equal_range ( K && key ) const & {
-		auto range = std::map < T, R, Cmp, Alloc >::equal_range ( std::forward < K > ( key ) );
-		return ext::iterator_range < decltype ( range.first ) > ( range.first, range.second );
+		auto res = std::map < T, R, Cmp, Alloc >::equal_range ( std::forward < K > ( key ) );
+		return ext::iterator_range < decltype ( res.first ) > ( res.first, res.second );
 	}
 	/**
@@ -305,8 +305,8 @@ public:
 	 */
 	template < class K >
 	auto equal_range ( K && key ) & {
-		auto range = std::map < T, R, Cmp, Alloc >::equal_range ( std::forward < K > ( key ) );
-		return ext::iterator_range < decltype ( range.first ) > ( range.first, range.second );
+		auto res = std::map < T, R, Cmp, Alloc >::equal_range ( std::forward < K > ( key ) );
+		return ext::iterator_range < decltype ( res.first ) > ( res.first, res.second );
 	}
 	/**
@@ -321,8 +321,8 @@ public:
 	 */
 	template < class K >
 	auto equal_range ( K && key ) && {
-		auto range = std::map < T, R, Cmp, Alloc >::equal_range ( std::forward < K > ( key ) );
-		return ext::make_iterator_range ( make_map_move_iterator < T, R > ( range.first ), make_map_move_iterator < T, R > ( range.second ) );
+		auto res = std::map < T, R, Cmp, Alloc >::equal_range ( std::forward < K > ( key ) );
+		return ext::make_iterator_range ( make_map_move_iterator < T, R > ( res.first ), make_map_move_iterator < T, R > ( res.second ) );
 	}
 };

alib2std/src/extensions/container/string.hpp

@@ -411,8 +411,8 @@ inline bool not_isspace ( int ch ) {
  * \return string without spaces at front of it
  */
 inline void ltrim ( std::string & s ) {
-	auto end = std::find_if ( s.begin ( ), s.end ( ), not_isspace );
-	s.erase ( s.begin ( ), end );
+	auto endPos = std::find_if ( s.begin ( ), s.end ( ), not_isspace );
+	s.erase ( s.begin ( ), endPos );
 }
 /**
@@ -424,8 +424,8 @@ inline void ltrim ( std::string & s ) {
  * \return string without spaces at back of it
  */
 inline void rtrim ( std::string & s ) {
-	auto begin = std::find_if ( s.rbegin ( ), s.rend ( ), not_isspace ).base ( );
-	s.erase ( begin, s.end ( ) );
+	auto beginPos = std::find_if ( s.rbegin ( ), s.rend ( ), not_isspace ).base ( );
+	s.erase ( beginPos, s.end ( ) );
 }
 /**