test: change error messages

Author: kjdev

tests/002.phpt

@@ -26,6 +26,6 @@ Warning: zstd_compress() expects at least 1 parameter, 0 given in %s on line %d
 bool(false)
 *** Testing with incorrect parameters ***
 
-Warning: zstd_compress(): expects parameter to be string. in %s on line %d
+Warning: zstd_compress() expects parameter 1 to be string, object given in %s on line %d
 bool(false)
 ===Done===

tests/005.phpt

@@ -26,9 +26,9 @@ Warning: zstd_uncompress() expects exactly 1 parameter, 0 given in %s on line %d
 bool(false)
 *** Testing with incorrect arguments ***
 
-Warning: zstd_uncompress(): expects parameter to be string. in %s on line %d
+Warning: zstd_uncompress(): it was not compressed by zstd in %s on line %d
 bool(false)
 
-Warning: zstd_uncompress(): expects parameter to be string. in %s on line %d
+Warning: zstd_uncompress() expects parameter 1 to be string, object given in %s on line %d
 bool(false)
 ===DONE===