More const

Author: msooseth

.clang-tidy

@@ -1,5 +1,5 @@
 ---
-Checks: '-*,misc-const-correctness'
+Checks: '-*,misc-const-correctness,performance-for-range-copy,readability-make-member-function-const'
 WarningsAsErrors: ''
 CheckOptions:
   - key: misc-const-correctness.AnalyzeValues

liblangutil/Exceptions.h

@@ -215,7 +215,7 @@ class Error: virtual public util::Exception
 	/// helper functions
 	static Error const* containsErrorOfType(ErrorList const& _list, Error::Type _type)
 	{
-		for (auto e: _list)
+		for (auto const& e: _list)
 			if (e->type() == _type)
 				return e.get();
 		return nullptr;
@@ -250,7 +250,7 @@ class Error: virtual public util::Exception
 
 	static bool containsErrors(ErrorList const& _list)
 	{
-		for (auto e: _list)
+		for (auto const& e: _list)
 			if (isError(e->type()))
 				return true;
 		return false;