Make core and vendor adhere to -vet, -strict-style, and -disallow-do

core/sys/win32/comdlg32.odin

@@ -88,7 +88,9 @@ _open_file_dialog :: proc(title: string, dir: string,
 
 	// Filters need to be passed as a pair of strings (title, filter)
 	filter_len := u32(len(filters))
-	if filter_len % 2 != 0 do return "", false
+	if filter_len % 2 != 0 {
+		return "", false
+	}
 
 	filter: string
 	filter = strings.join(filters, "\u0000", context.temp_allocator)

core/sys/win32/general.odin

@@ -837,7 +837,9 @@ wstring_to_utf8 :: proc(s: Wstring, N: int, allocator := context.temp_allocator)
 }
 
 utf16_to_utf8 :: proc(s: []u16, allocator := context.temp_allocator) -> string {
-	if len(s) == 0 do return ""
+	if len(s) == 0 {
+		return ""
+	}
 	return wstring_to_utf8(cast(Wstring)&s[0], len(s), allocator)
 }