[patch] bug 3358: LyX crashes with View->Open/Close all insets

[Jürgen Spitzmüller]

all-insets-toggle is for text insets (collapsables and charstyles) only. The 
attached patch skips math insets and thus fixes the crash.

Committing now.

Jürgen

Index: src/lyxfunc.C
===================================================================
--- src/lyxfunc.C	(Revision 17755)
+++ src/lyxfunc.C	(Arbeitskopie)
@@ -1563,8 +1563,9 @@
 			InsetIterator it  = inset_iterator_begin(inset);
 			InsetIterator const end = inset_iterator_end(inset);
 			for (; it != end; ++it) {
-				if (inset_code == InsetBase::NO_CODE
-				    || inset_code == it->lyxCode()) {
+				if (!it->asInsetMath()
+				    && (inset_code == InsetBase::NO_CODE
+				    || inset_code == it->lyxCode())) {
 					LCursor tmpcur = cur;
 					tmpcur.pushLeft(*it);
 					it->dispatch(tmpcur, fr);