patch 8.0.1588: popup menu hangs after typing CTRL-C

Problem:    Popup menu hangs after typing CTRL-C.
Solution:   Make CTRL-C exit the loop. (Ozaki Kiichi, closes #2697)
diff --git a/src/popupmnu.c b/src/popupmnu.c
index 985a0e6..0edfe50 100644
--- a/src/popupmnu.c
+++ b/src/popupmnu.c
@@ -1175,7 +1175,7 @@
 	out_flush();
 
 	c = vgetc();
-	if (c == ESC)
+	if (c == ESC || c == Ctrl_C)
 	    break;
 	else if (c == CAR || c == NL)
 	{
@@ -1211,7 +1211,7 @@
 	}
 	else if (c == K_LEFTDRAG || c == K_RIGHTDRAG || c == K_MOUSEMOVE)
 	{
-	    /* mouse moved: selec item in the mouse row */
+	    /* mouse moved: select item in the mouse row */
 	    pum_select_mouse_pos();
 	}
 	else if (c == K_LEFTMOUSE || c == K_LEFTMOUSE_NM || c == K_RIGHTRELEASE)