[PATCH 63/66] Remove NULL checks before xfree

[Tom Tromey]

A couple of spots in the TUI did a NULL check before an xfree.  This
isn't necessary, and most other cases were removed from gdb a while
ago.

2019-06-23  Tom Tromey  <tom@tromey.com>

	* tui/tui-source.c (tui_set_source_content): Don't check before
	xfree.
	* tui/tui-disasm.c (tui_disassemble): Don't check before xfree.
---
 gdb/ChangeLog        | 6 ++++++
 gdb/tui/tui-disasm.c | 6 ++----
 gdb/tui/tui-source.c | 3 +--
 3 files changed, 9 insertions(+), 6 deletions(-)

diff --git a/gdb/tui/tui-disasm.c b/gdb/tui/tui-disasm.c
index d3d53d7c607..4899b1d03cf 100644
--- a/gdb/tui/tui-disasm.c
+++ b/gdb/tui/tui-disasm.c
@@ -59,10 +59,8 @@ tui_disassemble (struct gdbarch *gdbarch, struct tui_asm_line *asm_lines,
   /* Now construct each line.  */
   for (; count > 0; count--, asm_lines++)
     {
-      if (asm_lines->addr_string)
-        xfree (asm_lines->addr_string);
-      if (asm_lines->insn)
-        xfree (asm_lines->insn);
+      xfree (asm_lines->addr_string);
+      xfree (asm_lines->insn);
       
       print_address (gdbarch, pc, &gdb_dis_out);
       asm_lines->addr = pc;
diff --git a/gdb/tui/tui-source.c b/gdb/tui/tui-source.c
index 4f82cbab2db..889b9509fec 100644
--- a/gdb/tui/tui-source.c
+++ b/gdb/tui/tui-source.c
@@ -163,8 +163,7 @@ tui_set_source_content (struct symtab *s,
 	    = (struct tui_source_window_base *) TUI_SRC_WIN;
 	  const char *s_filename = symtab_to_filename_for_display (s);
 
-	  if (TUI_SRC_WIN->title)
-	    xfree (TUI_SRC_WIN->title);
+	  xfree (TUI_SRC_WIN->title);
 	  TUI_SRC_WIN->title = xstrdup (s_filename);
 
 	  xfree (src->fullname);
-- 
2.17.2