Fixed some issues found by winapi_check.

dlls/ole32/ole32.spec

diff --git a/dlls/ole32/ole32.spec b/dlls/ole32/ole32.spec
index e9428c1..c60f33d 100644
--- a/dlls/ole32/ole32.spec
+++ b/dlls/ole32/ole32.spec
@@ -85,9 +85,9 @@
  82 stdcall MonikerCommonPrefixWith(ptr ptr ptr) MonikerCommonPrefixWith
  83 stub MonikerRelativePathTo
  84 stdcall OleBuildVersion() OleBuildVersion
- 85 stub OleConvertIStorageToOLESTREAM
+ 85 stdcall OleConvertIStorageToOLESTREAM(ptr ptr) OleConvertIStorageToOLESTREAM
  86 stub OleConvertIStorageToOLESTREAMEx
- 87 stub OleConvertOLESTREAMToIStorage
+ 87 stdcall OleConvertOLESTREAMToIStorage(ptr ptr ptr) OleConvertOLESTREAMToIStorage
  88 stub OleConvertOLESTREAMToIStorageEx
  89 stdcall OleCreate(ptr ptr long ptr ptr ptr ptr) OleCreate
  90 stdcall OleCreateDefaultHandler(ptr ptr ptr ptr) OleCreateDefaultHandler

dlls/shell32/shlwapi.spec

diff --git a/dlls/shell32/shlwapi.spec b/dlls/shell32/shlwapi.spec
index 6e0455a..1829530 100644
--- a/dlls/shell32/shlwapi.spec
+++ b/dlls/shell32/shlwapi.spec
@@ -209,8 +209,8 @@
 @ stub    PathGetDriveNumberW #(str) PathGetDriveNumber
 @ stub    PathIsContentTypeA
 @ stub    PathIsContentTypeW
-@ stub    PathIsDirectoryA
-@ stub    PathIsDirectoryW
+@ stdcall PathIsDirectoryA(str) PathIsDirectoryA
+@ stdcall PathIsDirectoryW(wstr) PathIsDirectoryW
 @ stub    PathIsFileSpecA
 @ stub    PathIsFileSpecW
 @ stub    PathIsPrefixA