Modify the scope_depth for variables in lambdas (#350)

If variable parent is a function without the name the scope_depth
is increased by 1. Not to be mixed with variables from scope where
lambda was created.

Author: filipsajdak

source/sema.h

@@ -971,7 +971,9 @@ class sema
             || n.pass == passing_style::forward
             )
         {
-            symbols.emplace_back( scope_depth, declaration_sym( true, n.declaration.get(), n.declaration->name(), n.declaration->initializer.get(), &n));
+            // Handle variables in unnamed functions. For such cases scope_depth is increased by +1
+            auto depth = scope_depth + ((n.declaration->parent_is_function() && n.declaration->parent_declaration->name() == nullptr) ? 1 : 0 );
+            symbols.emplace_back( depth, declaration_sym( true, n.declaration.get(), n.declaration->name(), n.declaration->initializer.get(), &n));
         }
     }