[UMPNPMGR] Fix remaining length calculation

diff --git a/base/services/umpnpmgr/rpcserver.c b/base/services/umpnpmgr/rpcserver.c
index cf49713..cba8968 100644 (file)
--- a/base/services/umpnpmgr/rpcserver.c
+++ b/base/services/umpnpmgr/rpcserver.c
@@ -1153,7 +1153,7 @@ GetEnumeratorInstanceList(
             break;
 
         dwUsedLength += dwPathLength - 1;
-        dwRemainingLength += dwPathLength - 1;
+        dwRemainingLength -= dwPathLength - 1;
         pPtr += dwPathLength - 1;
     }
 
@@ -1203,7 +1203,7 @@ GetAllInstanceList(
             break;
 
         dwUsedLength += dwPathLength - 1;
-        dwRemainingLength += dwPathLength - 1;
+        dwRemainingLength -= dwPathLength - 1;
         pPtr += dwPathLength - 1;
     }