webpdec.h: fix a doc typo
@@ -51,7 +51,7 @@ VP8StatusCode DecodeWebPIncremental(
//------------------------------------------------------------------------------
-// Reads a WebP from 'in_file', returning the decoded output in 'pic'.
+// Decodes a WebP contained in 'data', returning the decoded output in 'pic'.
// Output is RGBA or YUVA, depending on pic->use_argb value.
// If 'keep_alpha' is true and the WebP has an alpha channel, the output is RGBA
// or YUVA. Otherwise, alpha channel is dropped and output is RGB or YUV.
