hoping this fixes dougt's bustage

xpcom/io/nsFileSpecMac.cpp

@@ -1110,7 +1110,7 @@ PRInt64 nsFileSpec::GetDiskSpaceAvailable() const
 {
     PRInt64 int64;
 
-    LL_I2L(int64 , ULONG_MAX);
+    LL_I2L(int64 , LONG_MAX);
 
     HVolumeParam    pb;
     pb.ioCompletion = nsnull;

xpcom/io/nsFileSpecUnix.cpp

@@ -477,7 +477,10 @@ nsresult nsFileSpec::Execute(const char* inArgs ) const
 PRInt64 nsFileSpec::GetDiskSpaceAvailable() const
 //----------------------------------------------------------------------------------------
 {
-    
+    PRInt64 bytes; /* XXX dougt needs to fix this */
+    LL_I2L(bytes , LONG_MAX); // initialize to all the space in the world?
+
+
 #if defined(HAVE_SYS_STATFS_H) || defined(HAVE_SYS_STATVFS_H)
 
     char curdir [MAXPATHLEN];

xpcom/io/nsFileSpecWin.cpp

@@ -556,7 +556,7 @@ PRInt64 nsFileSpec::GetDiskSpaceAvailable() const
 {
     PRInt64 int64;
     
-    LL_I2L(int64 , ULONG_MAX);
+    LL_I2L(int64 , LONG_MAX);
 
     char aDrive[_MAX_DRIVE + 2];
 	_splitpath( (const char*)mPath, aDrive, NULL, NULL, NULL);