mdocml: remove a few redundant conditions that jsg@ found with cppcheck

mdocml: remove a few redundant conditions that jsg@ found with cppcheck

[schwarze]

Log Message:
-----------
remove a few redundant conditions that jsg@ found with cppcheck

Modified Files:
--------------
    mdocml:
        man.c
        mdoc.c
        mdoc_html.c
        roff.c

Revision Data
-------------
Index: mdoc_html.c
===================================================================
RCS file: /home/cvs/mdocml/mdocml/mdoc_html.c,v
retrieving revision 1.272
retrieving revision 1.273
diff -Lmdoc_html.c -Lmdoc_html.c -u -p -r1.272 -r1.273
--- mdoc_html.c
+++ mdoc_html.c
@@ -666,7 +666,7 @@ mdoc_it_pre(MDOC_ARGS)
 	enum mdoc_list		 type;
 
 	bl = n->parent;
-	while (bl != NULL && bl->tok != MDOC_Bl)
+	while (bl->tok != MDOC_Bl)
 		bl = bl->parent;
 	type = bl->norm->Bl.type;
 
Index: man.c
===================================================================
RCS file: /home/cvs/mdocml/mdocml/man.c,v
retrieving revision 1.167
retrieving revision 1.168
diff -Lman.c -Lman.c -u -p -r1.167 -r1.168
--- man.c
+++ man.c
@@ -203,7 +203,7 @@ man_pmacro(struct roff_man *man, int ln,
 
 	/* Jump to the next non-whitespace word. */
 
-	while (buf[offs] && buf[offs] == ' ')
+	while (buf[offs] == ' ')
 		offs++;
 
 	/*
Index: mdoc.c
===================================================================
RCS file: /home/cvs/mdocml/mdocml/mdoc.c,v
retrieving revision 1.260
retrieving revision 1.261
diff -Lmdoc.c -Lmdoc.c -u -p -r1.260 -r1.261
--- mdoc.c
+++ mdoc.c
@@ -382,7 +382,7 @@ mdoc_pmacro(struct roff_man *mdoc, int l
 
 	/* Jump to the next non-whitespace word. */
 
-	while (buf[offs] && ' ' == buf[offs])
+	while (buf[offs] == ' ')
 		offs++;
 
 	/*
Index: roff.c
===================================================================
RCS file: /home/cvs/mdocml/mdocml/roff.c,v
retrieving revision 1.290
retrieving revision 1.291
diff -Lroff.c -Lroff.c -u -p -r1.290 -r1.291
--- roff.c
+++ roff.c
@@ -1608,7 +1608,7 @@ roff_parseln(struct roff *r, int ln, str
 			return ROFF_IGN;
 		while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
 			pos++;
-		while (buf->buf[pos] != '\0' && buf->buf[pos] == ' ')
+		while (buf->buf[pos] == ' ')
 			pos++;
 		return tbl_read(r->tbl, ln, buf->buf, pos);
 	}
--
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