Fix whitespace remover

[rsammelson]

Previously, if there was enough whitespace to fill the buffer it would return a read length of zero, even though there is still content to read. This will cause consumers to assume they have read the entire content.

[coriolinus]

This is a good catch and a really good idea! However, for style reasons, please apply this patch:

diff --git a/src/whitespace_remover.rs b/src/whitespace_remover.rs
index 7df7b2b..b895119 100644
--- a/src/whitespace_remover.rs
+++ b/src/whitespace_remover.rs
@@ -24,11 +24,11 @@ where
     fn read(&mut self, buf: &mut [u8]) -> Result<usize> {
         let mut my_buf = vec![0; buf.len()];
 
-        Ok(loop {
+        loop {
             let n = self.inner.read(&mut my_buf)?;
             if n == 0 {
                 // the underlying reader is done
-                break 0;
+                return Ok(0);
             }
 
             my_buf.truncate(n);
@@ -37,10 +37,10 @@ where
             // keep reading until we get at least a byte to return
             if !my_buf.is_empty() {
                 buf[..my_buf.len()].copy_from_slice(&my_buf);
-                break my_buf.len();
+                return Ok(my_buf.len());
             }
 
             my_buf.resize(buf.len(), 0);
-        })
+        }
     }
 }

[coriolinus]

Superseded by #11.