Minor cleanup of CFString.odin

core/sys/darwin/CoreFoundation/CFString.odin

@@ -159,7 +159,7 @@ StringEncodings :: enum Index {
 	ShiftJIS_X0213_00       = 0x0628, // Deprecated. Use `ShiftJIS_X0213` instead.
 }
 
-@(link_prefix = "CF", default_calling_convention = "c")
+@(link_prefix="CF", default_calling_convention="c")
 foreign CoreFoundation {
 	// Copies the character contents of a string to a local C string buffer after converting the characters to a given encoding.
 	StringGetCString :: proc(theString: String, buffer: [^]byte, bufferSize: Index, encoding: StringEncoding) -> b8 ---
@@ -181,23 +181,16 @@ foreign CoreFoundation {
 
 STR :: StringMakeConstantString
 
-StringCopyToOdinString :: proc(
+StringCopyToOdinString :: proc(theString: String, allocator := context.allocator) -> (str: string, ok: bool) #optional_ok {
-	theString: String,
-	allocator := context.allocator,
-) -> (
-	str: string,
-	ok: bool,
-) #optional_ok {
 	length := StringGetLength(theString)
 	max := StringGetMaximumSizeForEncoding(length, StringEncoding(StringBuiltInEncodings.UTF8))
 
 	buf, err := make([]byte, max, allocator)
-	if err != nil { return }
+	if err != nil {
-
+		return
-	raw_str := runtime.Raw_String {
-		data = raw_data(buf),
 	}
-	StringGetBytes(theString, {0, length}, StringEncoding(StringBuiltInEncodings.UTF8), 0, false, raw_data(buf), max, (^Index)(&raw_str.len))
 
-	return transmute(string)raw_str, true
+	n: Index
+	StringGetBytes(theString, {0, length}, StringEncoding(StringBuiltInEncodings.UTF8), 0, false, raw_data(buf), Index(len(buf)), &n)
+	return string(buf[:n]), true
 }