Fix noinlineerr findings: internal/chunker (refs #61)

internal/chunker/chunker.go

@@ -121,12 +121,13 @@ func (c *Chunker) ChunkReaderStreaming(r io.Reader, callback ChunkCallback) (str
 		// Pass the data directly - caller must process it before we call Next() again
 		// (chunker reuses its internal buffer, but since we process synchronously
 		// and completely before continuing, no copy is needed)
-		if err := callback(Chunk{
+		err = callback(Chunk{
 			Hash:   hex.EncodeToString(hash[:]),
 			Data:   chunk.Data,
 			Offset: offset,
 			Size:   int64(len(chunk.Data)),
-		}); err != nil {
+		})
+		if err != nil {
 			return "", fmt.Errorf("callback error: %w", err)
 		}