xkb: Release XKB component names when compiling keymap.

Reviewed-by: Erkki Seppälä <erkki.seppala@vincit.fi>
Signed-off-by: Rami Ylimäki <rami.ylimaki@vincit.fi>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
(cherry picked from commit 5c47f8beac7f87680c6f7331483b9cf94a1dbc86)

4 files changed, 36 insertions, 21 deletions

diff --git a/include/xkbsrv.h b/include/xkbsrv.h
index 9f1507e8e..34ef5745e 100644
--- a/include/xkbsrv.h
+++ b/include/xkbsrv.h
@@ -447,6 +447,11 @@ extern _X_EXPORT void	XkbFreeKeyboard(
 	Bool			/* freeDesc */
 );
 
+extern _X_EXPORT void	XkbFreeComponentNames(
+	XkbComponentNamesPtr	/* names */,
+	Bool			/* freeNames */
+);
+
 extern _X_EXPORT  void XkbSetActionKeyMods(
 	XkbDescPtr		/* xkb */,
 	XkbAction *		/* act */,
diff --git a/xkb/XKBAlloc.c b/xkb/XKBAlloc.c
index bffd60fce..b70ac1705 100644
--- a/xkb/XKBAlloc.c
+++ b/xkb/XKBAlloc.c
@@ -333,3 +333,22 @@ XkbFreeKeyboard(XkbDescPtr xkb,unsigned which,Bool freeAll)
 	free(xkb);
     return;
 }
+
+
+/***====================================================================***/
+
+void
+XkbFreeComponentNames(XkbComponentNamesPtr names, Bool freeNames)
+{
+    if (names)
+    {
+        free(names->keycodes);
+        free(names->types);
+        free(names->compat);
+        free(names->symbols);
+        free(names->geometry);
+        memset(names, 0, sizeof(XkbComponentNamesRec));
+    }
+    if (freeNames)
+        free(names);
+}
diff --git a/xkb/ddxLoad.c b/xkb/ddxLoad.c
index ac587fc9d..a93569846 100644
--- a/xkb/ddxLoad.c
+++ b/xkb/ddxLoad.c
@@ -446,23 +446,23 @@ XkbRMLVOtoKcCGST(DeviceIntPtr dev, XkbRMLVOSet *rmlvo, XkbComponentNamesPtr kccg
 static XkbDescPtr
 XkbCompileKeymapForDevice(DeviceIntPtr dev, XkbRMLVOSet *rmlvo, int need)
 {
-    XkbDescPtr xkb;
+    XkbDescPtr xkb = NULL;
     unsigned int provided;
-    XkbComponentNamesRec kccgst;
+    XkbComponentNamesRec kccgst = {0};
     char name[PATH_MAX];
 
-    if (!XkbRMLVOtoKcCGST(dev, rmlvo, &kccgst))
-        return NULL;
-
-    provided = XkbDDXLoadKeymapByNames(dev, &kccgst, XkmAllIndicesMask, need,
-                                       &xkb, name, PATH_MAX);
-    if ((need & provided) != need) {
-        if (xkb) {
-            XkbFreeKeyboard(xkb, 0, TRUE);
-            xkb = NULL;
+    if (XkbRMLVOtoKcCGST(dev, rmlvo, &kccgst)) {
+        provided = XkbDDXLoadKeymapByNames(dev, &kccgst, XkmAllIndicesMask, need,
+                                           &xkb, name, PATH_MAX);
+        if ((need & provided) != need) {
+            if (xkb) {
+                XkbFreeKeyboard(xkb, 0, TRUE);
+                xkb = NULL;
+            }
         }
     }
 
+    XkbFreeComponentNames(&kccgst, FALSE);
     return xkb;
 }
 
diff --git a/xkb/xkb.c b/xkb/xkb.c
index a57139f35..63eb46a9e 100644
--- a/xkb/xkb.c
+++ b/xkb/xkb.c
@@ -5897,16 +5897,7 @@ ProcXkbGetKbdByName(ClientPtr client)
 	XkbFreeKeyboard(new,XkbAllComponentsMask,TRUE);
 	new= NULL;
     }
-    free(names.keycodes);
-    names.keycodes = NULL;
-    free(names.types);
-    names.types = NULL;
-    free(names.compat);
-    names.compat = NULL;
-    free(names.symbols);
-    names.symbols = NULL;
-    free(names.geometry);
-    names.geometry = NULL;
+    XkbFreeComponentNames(&names, FALSE);
     return Success;
 }