Fix typos in header files

Patch-from: lvqcl <lvqcl.mail@gmail.com>

include/FLAC++/decoder.h

@@ -115,7 +115,7 @@ namespace FLAC {
 			virtual ~Stream();
 
 			//@{
-			/** Call after construction to check the that the object was created
+			/** Call after construction to check that the object was created
 			 *  successfully.  If not, use get_state() to find out why not.
 			 */
 			virtual bool is_valid() const;

include/FLAC++/encoder.h

@@ -117,7 +117,7 @@ namespace FLAC {
 			virtual ~Stream();
 
 			//@{
-			/** Call after construction to check the that the object was created
+			/** Call after construction to check that the object was created
 			 *  successfully.  If not, use get_state() to find out why not.
 			 *
 			 */

include/share/private.h

@@ -33,7 +33,7 @@
 #define FLAC__SHARE__PRIVATE_H
 
 /*
- * Unpublished debug routines from libFLAC> This should not be used from any
+ * Unpublished debug routines from libFLAC. This should not be used from any
  * client code other than code shipped with the FLAC sources.
  */
 FLAC_API FLAC__bool FLAC__stream_encoder_disable_constant_subframes(FLAC__StreamEncoder *encoder, FLAC__bool value);