Add whitespace

src/shims/posix/foreign_items.rs

@@ -61,7 +61,7 @@ fn emulate_foreign_item_by_name(
             }
             "fcntl" => {
                 // `fcntl` is variadic. The argument count is checked based on the first argument
-                // in`this.fcntl()`, so we do not use `check_shim` here.
+                // in `this.fcntl()`, so we do not use `check_shim` here.
                 this.check_abi_and_shim_symbol_clash(abi, Abi::C { unwind: false }, link_name_sym)?;
                 let result = this.fcntl(args)?;
                 this.write_scalar(Scalar::from_i32(result), dest)?;