[PATCH:libXau 1/2] Clean up some clang warnings about sign conversion

[Alan Coopersmith]

fread & fwrite are defined as taking size_t arguments (an unsigned type),
so stop casting their arguments to a signed int just to confuse things.

Fixes warnings:

AuFileName.c:69:59: warning: implicit conversion loses integer precision: 'unsigned long' to 'int' [-Wshorten-64-to-32]
    size = strlen (name) + strlen(&slashDotXauthority[1]) + 2;
         ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~

AuRead.c:58:44: warning: implicit conversion changes signedness: 'int' to 'size_t' (aka 'unsigned long') [-Wsign-conversion]
        if (fread (data, (int) sizeof (char), (int) len, file) != len) {
            ~~~~~                             ^~~~~~~~~

AuWrite.c:49:46: warning: implicit conversion changes signedness: 'int' to 'size_t' (aka 'unsigned long') [-Wsign-conversion]
    if (fwrite (string, (int) sizeof (char), (int) count, file) != count)
        ~~~~~~                               ^~~~~~~~~~~

Signed-off-by: Alan Coopersmith <alan.coopersmith at oracle.com>
---
 AuFileName.c |    6 +++---
 AuRead.c     |    4 ++--
 AuWrite.c    |    4 ++--
 3 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/AuFileName.c b/AuFileName.c
index bc7b177..473fad1 100644
--- a/AuFileName.c
+++ b/AuFileName.c
@@ -45,12 +45,12 @@ XauFileName (void)
 {
     const char *slashDotXauthority = "/.Xauthority";
     char    *name;
-    static int	bsize;
+    static size_t	bsize;
     static int atexit_registered = 0;
 #ifdef WIN32
     char    dir[128];
 #endif
-    int	    size;
+    size_t  size;
 
     if ((name = getenv ("XAUTHORITY")))
 	return name;
@@ -70,7 +70,7 @@ XauFileName (void)
     if (size > bsize) {
 	if (buf)
 	    free (buf);
-	buf = malloc ((unsigned) size);
+	buf = malloc (size);
 	if (!buf)
 	    return NULL;
 
diff --git a/AuRead.c b/AuRead.c
index 3c59632..5d41f03 100644
--- a/AuRead.c
+++ b/AuRead.c
@@ -35,7 +35,7 @@ read_short (unsigned short *shortp, FILE *file)
 {
     unsigned char   file_short[2];
 
-    if (fread ((char *) file_short, (int) sizeof (file_short), 1, file) != 1)
+    if (fread ((char *) file_short, sizeof (file_short), 1, file) != 1)
 	return 0;
     *shortp = file_short[0] * 256 + file_short[1];
     return 1;
@@ -55,7 +55,7 @@ read_counted_string (unsigned short *countp, char **stringp, FILE *file)
     	data = malloc ((unsigned) len);
     	if (!data)
 	    return 0;
-    	if (fread (data, (int) sizeof (char), (int) len, file) != len) {
+	if (fread (data, sizeof (char), len, file) != len) {
 	    bzero (data, len);
 	    free (data);
 	    return 0;
diff --git a/AuWrite.c b/AuWrite.c
index 0924f8d..1eb38a3 100644
--- a/AuWrite.c
+++ b/AuWrite.c
@@ -36,7 +36,7 @@ write_short (unsigned short s, FILE *file)
 
     file_short[0] = (s & (unsigned)0xff00) >> 8;
     file_short[1] = s & 0xff;
-    if (fwrite ((char *) file_short, (int) sizeof (file_short), 1, file) != 1)
+    if (fwrite ((char *) file_short, sizeof (file_short), 1, file) != 1)
 	return 0;
     return 1;
 }
@@ -46,7 +46,7 @@ write_counted_string (unsigned short count, char *string, FILE *file)
 {
     if (write_short (count, file) == 0)
 	return 0;
-    if (fwrite (string, (int) sizeof (char), (int) count, file) != count)
+    if (fwrite (string, sizeof (char), count, file) != count)
 	return 0;
     return 1;
 }
-- 
1.7.9.2