Fixed a long standing (and annoying) typo, that prevented
GetDiskFreeSpaceA from working...

diff --git a/files/drive.c b/files/drive.c
index 3e969a5..ef12bb9 100644
--- a/files/drive.c
+++ b/files/drive.c
@@ -755,7 +755,7 @@
     LPCSTR path;
     DWORD cluster_sec;
 
-    if ((!root) || (root == "\\"))
+    if ((!root) || (strcmp(root,"\\") == 0))
 	drive = DRIVE_GetCurrentDrive();
     else
     if ( (strlen(root) >= 2) && (root[1] == ':')) /* root contains drive tag */