Consolidate "if"s in tui_show_frame_info

tui_show_frame_info has two parallel "if"s with the same condition and
no intervening code.  The second "if" perhaps wasn't obviously
identical, but earlier refactorings made it clearer, by pointing out
that only source and disassembly windows can be handled here.  This
merges the two statements.

gdb/ChangeLog
2019-07-17  Tom Tromey  <tom@tromey.com>

	* tui/tui-stack.c (tui_show_frame_info): Consolidate "if"s.

1 files changed, 27 insertions, 35 deletions

diff --git a/gdb/tui/tui-stack.c b/gdb/tui/tui-stack.c
index f761ac1..e1b996d 100644
--- a/gdb/tui/tui-stack.c
+++ b/gdb/tui/tui-stack.c
@@ -341,8 +341,6 @@ tui_show_frame_info (struct frame_info *fi)
 
   if (fi)
     {
-      int start_line;
-      CORE_ADDR low;
       struct tui_locator_window *locator = tui_locator_win_info_ptr ();
       int source_already_displayed;
       CORE_ADDR pc;
@@ -372,32 +370,15 @@ tui_show_frame_info (struct frame_info *fi)
 	return 0;
 
       tui_show_locator_content ();
-      start_line = 0;
       for (struct tui_source_window_base *win_info : tui_source_windows ())
 	{
 	  if (win_info == TUI_SRC_WIN)
 	    {
-	      start_line = (locator->line_no -
-			   (win_info->viewport_height / 2)) + 1;
+	      int start_line = (locator->line_no -
+				(win_info->viewport_height / 2)) + 1;
 	      if (start_line <= 0)
 		start_line = 1;
-	    }
-	  else
-	    {
-	      if (find_pc_partial_function (get_frame_pc (fi),
-					    NULL, &low, NULL) == 0)
-		{
-		  /* There is no symbol available for current PC.  There is no
-		     safe way how to "disassemble backwards".  */
-		  low = get_frame_pc (fi);
-		}
-	      else
-		low = tui_get_low_disassembly_address (get_frame_arch (fi),
-						       low, get_frame_pc (fi));
-	    }
 
-	  if (win_info == TUI_SRC_WIN)
-	    {
 	      struct tui_line_or_address l;
 
 	      l.loa = LOA_LINE;
@@ -415,23 +396,34 @@ tui_show_frame_info (struct frame_info *fi)
 	    }
 	  else
 	    {
-	      if (win_info == TUI_DISASM_WIN)
+	      CORE_ADDR low;
+
+	      if (find_pc_partial_function (get_frame_pc (fi),
+					    NULL, &low, NULL) == 0)
+		{
+		  /* There is no symbol available for current PC.  There is no
+		     safe way how to "disassemble backwards".  */
+		  low = get_frame_pc (fi);
+		}
+	      else
+		low = tui_get_low_disassembly_address (get_frame_arch (fi),
+						       low, get_frame_pc (fi));
+
+	      struct tui_line_or_address a;
+
+	      a.loa = LOA_ADDRESS;
+	      a.u.addr = low;
+	      if (!tui_addr_is_displayed (locator->addr,
+					  win_info, TRUE))
+		tui_update_source_window (win_info, get_frame_arch (fi),
+					  sal.symtab, a, TRUE);
+	      else
 		{
-		  struct tui_line_or_address a;
-
-		  a.loa = LOA_ADDRESS;
-		  a.u.addr = low;
-		  if (!tui_addr_is_displayed (locator->addr,
-					      win_info, TRUE))
-		    tui_update_source_window (win_info, get_frame_arch (fi),
-					      sal.symtab, a, TRUE);
-		  else
-		    {
-		      a.u.addr = locator->addr;
-		      win_info->set_is_exec_point_at (a);
-		    }
+		  a.u.addr = locator->addr;
+		  win_info->set_is_exec_point_at (a);
 		}
 	    }
+
 	  tui_update_exec_info (win_info);
 	}