mdocml: Fix left/right nesting in eqn.

mdocml: Fix left/right nesting in eqn.

[kristaps]

Log Message:
-----------
Fix left/right nesting in eqn.

Modified Files:
--------------
    mdocml:
        eqn.7
        eqn.c

Revision Data
-------------
Index: eqn.c
===================================================================
RCS file: /usr/vhosts/mdocml.bsd.lv/cvs/mdocml/eqn.c,v
retrieving revision 1.25
retrieving revision 1.26
diff -Leqn.c -Leqn.c -u -p -r1.25 -r1.26
--- eqn.c
+++ eqn.c
@@ -309,14 +309,18 @@ eqn_box(struct eqn_node *ep, struct eqn_
 			return(EQN_ERR);
 		}
 		left = mandoc_strndup(start, sz);
-		if (EQN_DESCOPE != (c = eqn_eqn(ep, last)))
+		c = eqn_eqn(ep, last);
+		if (last->last)
+			last->last->left = left;
+		else
+			free(left);
+		if (EQN_DESCOPE != c)
 			return(c);
 		assert(last->last);
-		last->last->left = left;
 		eqn_rewind(ep);
 		start = eqn_nexttok(ep, &sz);
 		assert(start);
-		if (STRNEQ(start, sz, "right", 5))
+		if ( ! STRNEQ(start, sz, "right", 5))
 			return(EQN_DESCOPE);
 		if (NULL == (start = eqn_nexttok(ep, &sz))) {
 			EQN_MSG(MANDOCERR_EQNEOF, ep);
Index: eqn.7
===================================================================
RCS file: /usr/vhosts/mdocml.bsd.lv/cvs/mdocml/eqn.7,v
retrieving revision 1.13
retrieving revision 1.14
diff -Leqn.7 -Leqn.7 -u -p -r1.13 -r1.14
--- eqn.7
+++ eqn.7
@@ -72,7 +72,7 @@ box     : text
         | pile { list }
         | font box
         | SIZE text box
-        | LEFT text box [RIGHT text]
+        | LEFT text eqn [RIGHT text]
 text    : TEXT
 pile    : LPILE
         | CPILE
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