Avoiding the loss a buffer when getcwd() fails.

This fixes Savannah bug #47129 reported by Mike Frysinger.


git-svn-id: svn://svn.savannah.gnu.org/nano/trunk/nano@5647 35c25a1d-7b9e-4130-9fde-d3aeb78583b8

ChangeLog

@@ -2,6 +2,8 @@
 	* src/files.c (read_file): Free not just the struct but also the
 	data it contains, and also when it is the first and only line.
 	This fixes Savannah bug #47153 reported by Mike Frysinger.
+	* src/files.c (get_full_path): Avoid losing a buffer when getcwd()
+	fails. 	This fixes Savannah bug #47129 reported by Mike Frysinger.
 
 2016-02-14  Benno Schulenberg  <bensberg@justemail.net>
 	* src/search.c (do_replace_loop): Make iterating through replacement

src/files.c

@@ -1413,14 +1413,13 @@ char *get_full_path(const char *origpath)
     /* Get the current directory.  If it doesn't exist, back up and try
      * again until we get a directory that does, and use that as the
      * current directory. */
-    d_here = charalloc(PATH_MAX + 1);
-    d_here = getcwd(d_here, PATH_MAX + 1);
+    d_here = getcwd(NULL, PATH_MAX + 1);
 
     while (d_here == NULL) {
 	if (chdir("..") == -1)
 	    break;
 
-	d_here = getcwd(d_here, PATH_MAX + 1);
+	d_here = getcwd(NULL, PATH_MAX + 1);
     }
 
     /* If we succeeded, canonicalize it in d_here. */
@@ -1481,8 +1480,7 @@ char *get_full_path(const char *origpath)
 	    free(d_there);
 
 	    /* Get the full path. */
-	    d_there = charalloc(PATH_MAX + 1);
-	    d_there = getcwd(d_there, PATH_MAX + 1);
+	    d_there = getcwd(NULL, PATH_MAX + 1);
 
 	    /* If we succeeded, canonicalize it in d_there. */
 	    if (d_there != NULL) {