tdf#94871: sw: fix a frame formatting regression that affects help

The early return must also be taken if the anchor is neither AT_CHAR nor
AT_PARA.

(regression from a219bbb6)

Change-Id: I4eccb1f80401ba620ef87342f40c1a896918f3d3
(cherry picked from commit 9092f96c)
Reviewed-on: https://gerrit.libreoffice.org/19649Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Miklos Vajna <vmiklos@collabora.co.uk>
(cherry picked from commit ae846d08)

sw/source/core/text/itratr.cxx

@@ -434,15 +434,17 @@ static void lcl_MinMaxNode( SwFrameFormat* pNd, SwMinMaxNodeArgs* pIn )
 {
     const SwFormatAnchor& rFormatA = pNd->GetAnchor();
 
-    if ((FLY_AT_PARA == rFormatA.GetAnchorId()) ||
-        (FLY_AT_CHAR == rFormatA.GetAnchorId()))
+    if ((FLY_AT_PARA != rFormatA.GetAnchorId()) &&
+        (FLY_AT_CHAR != rFormatA.GetAnchorId()))
     {
-        const SwPosition *pPos = rFormatA.GetContentAnchor();
-        OSL_ENSURE(pPos && pIn, "Unexpected NULL arguments");
-        if (!pPos || !pIn || pIn->nIndx != pPos->nNode.GetIndex())
-            return;
+        return;
     }
 
+    const SwPosition *pPos = rFormatA.GetContentAnchor();
+    OSL_ENSURE(pPos && pIn, "Unexpected NULL arguments");
+    if (!pPos || !pIn || pIn->nIndx != pPos->nNode.GetIndex())
+        return;
+
     long nMin, nMax;
     SwHTMLTableLayout *pLayout = 0;
     const bool bIsDrawFrameFormat = pNd->Which()==RES_DRAWFRMFMT;