plugin-nvptx.c (cuda_lib_inited): Use signed char type instead of char.

	* plugin/plugin-nvptx.c (cuda_lib_inited): Use signed char type
	instead of char.

From-SVN: r246918

libgomp/ChangeLog

+2017-04-13  Jakub Jelinek  <jakub@redhat.com>
+
+	* plugin/plugin-nvptx.c (cuda_lib_inited): Use signed char type
+	instead of char.
+
 2017-04-11  Jakub Jelinek  <jakub@redhat.com>
 
 	PR libgomp/80394

libgomp/plugin/plugin-nvptx.c

@@ -106,7 +106,7 @@ struct cuda_lib_s {
 
 /* -1 if init_cuda_lib has not been called yet, false
    if it has been and failed, true if it has been and succeeded.  */
-static char cuda_lib_inited = -1;
+static signed char cuda_lib_inited = -1;
 
 /* Dynamically load the CUDA runtime library and initialize function
    pointers, return false if unsuccessful, true if successful.  */