Open files for reading as "r", not "r+".

git-svn-id: https://svn.apache.org/repos/asf/xerces/c/trunk@175292 13f79535-47bb-0310-9956-ffa450edef68

src/xercesc/util/Platforms/MacOS/MacPosixFile.cpp

@@ -164,7 +164,7 @@ XMLMacPosixFile::open(const char* const path, bool toWrite)
     if (!path)
 		ThrowXML(XMLPlatformUtilsException, XMLExcepts::CPtr_PointerIsZero);
 
-	const char* perms = (toWrite) ? "w" : "r+";
+	const char* perms = (toWrite) ? "w" : "r";
 	mFile = fopen(path, perms);
 	
 	return (mFile != NULL);