[src/code.rs] Apply changed from PR comments

Author: SamuelMarks

src/code.rs

@@ -817,7 +817,7 @@ fn build_default_impl_fn<'a>(
 /// Generate a full file for a given diesel table
 pub fn generate_for_table(table: &ParsedTableMacro, config: &GenerationConfig) -> String {
     // early to ensure the table options are set for the current table
-    let struct_name = table.struct_name.to_string();
+    let struct_name = &table.struct_name;
     let table_options = config.table(&table.name.to_string());
     let generated_columns = table_options.get_autogenerated_columns();
 
@@ -849,7 +849,6 @@ pub fn generate_for_table(table: &ParsedTableMacro, config: &GenerationConfig) -
                 .as_str(),
             );
         }
-        ret_buffer.push('\n');
     }
 
     let update_struct = Struct::new(StructType::Update, table, config);
@@ -871,7 +870,6 @@ pub fn generate_for_table(table: &ParsedTableMacro, config: &GenerationConfig) -
             build_default_impl_fn(&struct_name, table.columns.iter().filter(not_generated))
                 .as_str(),
         );
-        ret_buffer.push('\n');
     }
 
     ret_buffer