satisfy ktlint demand for spacing around "*"

Signed-off-by: Graeme Power <gjpower@tcd.ie>

vector/src/main/java/im/vector/app/core/qrcode/QrCode.kt

@@ -34,7 +34,7 @@ fun String.toBitMatrix(size: Int): BitMatrix {
 
 fun BitMatrix.toBitmap(@ColorInt backgroundColor: Int = Color.WHITE,
                        @ColorInt foregroundColor: Int = Color.BLACK): Bitmap {
-    val colorBuffer = IntArray(width*height)
+    val colorBuffer = IntArray(width * height)
     var rowOffset = 0
     for (y in 0 until height) {
         for (x in 0 until width) {