(c/cpp) Add return when void (#22)

lua/neogen/configurations/c.lua

@@ -73,7 +73,7 @@ local c_function_extractor = function(node)
             -- function implementation
             return res.return_statement
         elseif res.function_declarator and res.primitive_type then
-            if res.primitive_type[1] ~= "void" or res.pointer_declarator then
+            if res.primitive_type or res.pointer_declarator then
                 -- function prototype
                 return res.primitive_type
             end
@@ -91,7 +91,13 @@ end
 
 return {
     parent = {
-        func = { "function_declaration", "function_definition", "declaration", "field_declaration", "template_declaration" },
+        func = {
+            "function_declaration",
+            "function_definition",
+            "declaration",
+            "field_declaration",
+            "template_declaration",
+        },
     },
 
     data = {