Warning with XML / HTML style commands

When having a problem like:
```
///    set <var> var start_interp </em>
void fie(void);

///    set <i> i start_interp
void fie1(void);
```
we get the warnings (doubles omitted):
```
.../bb.h:5: warning: end of comment block while expecting command </em>
```
so
- discrepancy between `<var>` and closing `</em>` is not reported, but wrong for as opening and closing tag should have the same tag name.
- the missing `</i>` is reported as a missing `</em>`

The problems here are due to the fact that `<var>`, `<i>` and `<em>` share all the style `HTML_EMPHASIS`, this problem has been fixed by adding the used tag name to the style information and testing o
n the name and not the style type.

The result is now:
```
.../bb.h:1: warning: found </em> tag while expecting </var>
.../bb.h:2: warning: end of comment block while expecting command </var>
.../bb.h:5: warning: end of comment block while expecting command </i>
```
so now the real problems are reported.

1 files changed, 4 insertions, 2 deletions

diff --git a/src/docparser.h b/src/docparser.h
index 02fe135..d252182 100644
--- a/src/docparser.h
+++ b/src/docparser.h
@@ -388,10 +388,10 @@ class DocStyleChange : public DocNode
                  Ins           = (1<<13)
                };
 
-    DocStyleChange(DocNode *parent,uint position,Style s,bool enable,
+    DocStyleChange(DocNode *parent,uint position,Style s,QCString tagName,bool enable,
                    const HtmlAttribList *attribs=0) : 
       m_position(position), m_style(s), m_enable(enable)
-      { m_parent = parent; if (attribs) m_attribs=*attribs; }
+      { m_parent = parent; if (attribs) m_attribs=*attribs; m_tagName = tagName.lower();}
     Kind kind() const                     { return Kind_StyleChange; }
     Style style() const                   { return m_style; }
     const char *styleString() const;
@@ -399,12 +399,14 @@ class DocStyleChange : public DocNode
     uint position() const                 { return m_position; }
     void accept(DocVisitor *v)            { v->visit(this); }
     const HtmlAttribList &attribs() const { return m_attribs; }
+    QCString tagName() const              { return m_tagName; }
 
   private:
     uint     m_position;
     Style    m_style;
     bool     m_enable;
     HtmlAttribList m_attribs;
+    QCString m_tagName;
 };
 
 /** Node representing a special symbol */