patch 9.2.0066: memory leak in build_drop_cmd()

Commit: 
https://github.com/vim/vim/commit/c0740e046e936ccff4fb622b6a108e0e2306b04f
Author: Huihui Huang <[email protected]>
Date:   Thu Feb 26 21:08:50 2026 +0000

    patch 9.2.0066: memory leak in build_drop_cmd()
    
    Problem:  memory leak in build_drop_cmd()
    Solution: Free cdp.string on early return
              (Huihui Huang).
    
    closes: #19517
    
    Signed-off-by: Huihui Huang <[email protected]>
    Signed-off-by: Christian Brabandt <[email protected]>

diff --git a/src/clientserver.c b/src/clientserver.c
index 3d801bbf0..ae5130dd3 100644
--- a/src/clientserver.c
+++ b/src/clientserver.c
@@ -740,6 +740,7 @@ build_drop_cmd(
                );
        if (p == NULL)
        {
+           vim_free(cdp.string);
            vim_free(ga.ga_data);
            return NULL;
        }
diff --git a/src/version.c b/src/version.c
index 046a7e473..6402b27b4 100644
--- a/src/version.c
+++ b/src/version.c
@@ -734,6 +734,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    66,
 /**/
     65,
 /**/

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