patch 8.1.1632: build with EXITFREE but without +arabic fails

Problem:    Build with EXITFREE but without +arabic fails.
Solution:   Rename the function and adjust #ifdefs. (closes #4613)

src/ex_getln.c

@@ -3174,7 +3174,7 @@ static char_u	*arshape_buf = NULL;
 
 # if defined(EXITFREE) || defined(PROTO)
     void
-free_cmdline_buf(void)
+free_arshape_buf(void)
 {
     vim_free(arshape_buf);
 }

src/misc2.c

@@ -1193,7 +1193,9 @@ free_all_mem(void)
 	    buf = firstbuf;
     }
 
-    free_cmdline_buf();
+# ifdef FEAT_ARABIC
+    free_arshape_buf();
+# endif
 
     /* Clear registers. */
     clear_registers();

src/proto/ex_getln.pro

@@ -12,7 +12,7 @@ char_u *getexmodeline(int promptc, void *cookie, int indent, int do_concat);
 int cmdline_overstrike(void);
 int cmdline_at_end(void);
 colnr_T cmdline_getvcol_cursor(void);
-void free_cmdline_buf(void);
+void free_arshape_buf(void);
 void putcmdline(int c, int shift);
 void unputcmdline(void);
 int put_on_cmdline(char_u *str, int len, int redraw);

src/version.c

@@ -777,6 +777,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1632,
 /**/
     1631,
 /**/