DiskCache.maxSize calculates incorrectly

[Samuel-Unknown]

Describe the bug
I found a problem with DiskCache. It calculates maxSize incorrectly.

To Reproduce
If you create a DiskCache by setting maxSizePercent and a directory that doesn't exist (e.g. the first run before putting anything in the cache), maxSize will be equal to minimumMaxSizeBytes.

You can't catch this with Robolectric tests, but you can with InstrumentedTests:

@Test
fun `checkInitSize`() {
val appContext = InstrumentationRegistry.getInstrumentation().targetContext
val minimumMaxSizeBytes = 100L
val maximumMaxSizeBytes = 200L
val maxSizePercent = 0.5

val diskCache = DiskCache.Builder().directory(appContext.filesDir.resolve("test_dir"))
   .maxSizePercent(maxSizePercent)
   .minimumMaxSizeBytes(minimumMaxSizeBytes)
   .maximumMaxSizeBytes(maximumMaxSizeBytes)
   .build()

    assertNotEquals(minimumMaxSizeBytes, diskCache.maxSize)
}

Version
2.2.2

P.S. Workaround:

DiskCache.Builder()
   .directory(context.filesDir.resolve(CACHE_DIR_NAME))
   .maxSizePercent(0.5)
   .also {
      if (context.filesDir.resolve(CACHE_DIR_NAME).exists().not()) {
         context.filesDir.resolve(CACHE_DIR_NAME).mkdir()
      }
   }
   .build()

[colinrtwhite]

Fixed by #1620.