Fix clang warnings.

Author: michaelrsweet

cups/auth.c

@@ -449,8 +449,8 @@ _cupsSetNegotiateAuthString(
   {
     // Allocate the authorization string since Windows KDCs can have
     // arbitrarily large credentials...
-    int authsize = 10 +			// "Negotiate "
-		   (((int)output_token.length * 4 / 3 + 3) & ~3) + 1;
+    size_t authsize = (size_t)(10 +	// "Negotiate "
+			       ((output_token.length * 4 / 3 + 3) & ~3U) + 1);
 		   			// Base64 + nul
 
     httpSetAuthString(http, NULL, NULL);

cups/ipp-support.c

@@ -2019,7 +2019,7 @@ ippCreateRequestedArray(ipp_t *request)	// I - IPP request
   }
 
   // If the attribute contains a single "all" keyword, return NULL...
-  count = ippGetCount(requested);
+  count = (size_t)ippGetCount(requested);
   if (count == 1 && !strcmp(ippGetString(requested, 0, NULL), "all"))
     return (NULL);
 

cups/ipp.c

@@ -6042,7 +6042,7 @@ ipp_set_value(ipp_t           *ipp,	// IO - IPP message
   if (temp->num_values <= 1)
     alloc_values = 1;
   else
-    alloc_values = (temp->num_values + IPP_MAX_VALUES - 1) & (size_t)~(IPP_MAX_VALUES - 1);
+    alloc_values = (temp->num_values + IPP_MAX_VALUES - 1) & ~(IPP_MAX_VALUES - 1);
 
   if (element < alloc_values)
   {

cups/tls-openssl.c

@@ -96,7 +96,7 @@ cupsAreCredentialsValidForName(
     STACK_OF(GENERAL_NAME) *names = NULL;
 					// subjectAltName values
 
-    DEBUG_printf("1cupsAreCredentialsValidForName: certs=%p(num=%d), cert=%p", certs, sk_X509_num(certs), cert);
+    DEBUG_printf("1cupsAreCredentialsValidForName: certs=%p(num=%d), cert=%p", (void *)certs, sk_X509_num(certs), (void *)cert);
 
     X509_NAME_get_text_by_NID(X509_get_subject_name(cert), NID_commonName, subjectName, sizeof(subjectName));
     DEBUG_printf("1cupsAreCredentialsValidForName: subjectName=\"%s\"", subjectName);
@@ -116,7 +116,7 @@ cupsAreCredentialsValidForName(
     if (!result)
     {
       names = X509_get_ext_d2i(cert, NID_subject_alt_name, /*crit*/NULL, /*idx*/NULL);
-      DEBUG_printf("1cupsAreCredentialsValidForName: names=%p", names);
+      DEBUG_printf("1cupsAreCredentialsValidForName: names=%p", (void *)names);
     }
 
     if (names)