Fix spelling/wording issues

Found by using:
    codespell --builtin clear,rare,usage,informal,code,names

Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>

3 files changed, 6 insertions, 6 deletions

diff --git a/README.md b/README.md
index 7a359c9..ae4cb05 100644
--- a/README.md
+++ b/README.md
@@ -8,7 +8,7 @@ Xorg mailing list:
 
  * https://lists.x.org/mailman/listinfo/xorg
 
-The master development code repository can be found at:
+The primary development code repository can be found at:
 
  * https://gitlab.freedesktop.org/xorg/app/xprop
 
diff --git a/dsimple.c b/dsimple.c
index 3f800cf..afe41b6 100644
--- a/dsimple.c
+++ b/dsimple.c
@@ -43,7 +43,7 @@ from The Open Group.
 #include "dsimple.h"
 
 /*
- * Just_display: A group of routines designed to make the writting of simple
+ * Just_display: A group of routines designed to make the writing of simple
  *               X11 applications which open a display but do not open
  *               any windows much faster and easier.  Unless a routine says
  *               otherwise, it may be assumed to require program_name, dpy,
@@ -59,7 +59,7 @@ Display *dpy = NULL;
 int      screen = 0;
 
 /*
- * Get_Display_Name (argc, argv) Look for -display, -d, or host:dpy (obselete)
+ * Get_Display_Name (argc, argv) Look for -display, -d, or host:dpy (obsolete)
  * If found, remove it from command line.  Don't go past a lone -.
  */
 char *Get_Display_Name(
@@ -162,7 +162,7 @@ XFontStruct *Open_Font(const char *name)
 
 
 /*
- * Select_Window_Args: a rountine to provide a common interface for
+ * Select_Window_Args: a routine to provide a common interface for
  *                     applications that need to allow the user to select one
  *                     window on the screen for special consideration.
  *                     This routine implements the following command line
diff --git a/xprop.c b/xprop.c
index 8d60089..1138cfa 100644
--- a/xprop.c
+++ b/xprop.c
@@ -1890,7 +1890,7 @@ Parse_Format_Mapping (int *argc, char ***argv)
 #define ARGC (*argc)
 #define ARGV (*argv)
 #define OPTION ARGV[0]
-#define NXTOPT if (++ARGV, --ARGC==0) usage("insufficent arguments for -format")
+#define NXTOPT if (++ARGV, --ARGC==0) usage("insufficient arguments for -format")
     char *type_name, *format, *dformat;
   
     NXTOPT; type_name = OPTION;
@@ -2025,7 +2025,7 @@ main (int argc, char **argv)
 	}
 	if (!strcmp(argv[0], "-set")) {
 	    thunk t = {0};
-	    if (argc < 3) usage("insufficent arguments for -set");
+	    if (argc < 3) usage("insufficient arguments for -set");
 	    t.propname = argv[1];
 	    t.extra_value = argv[2];
 	    argv += 3; argc -= 3;