Reduce (some more) compile noise of 'unused variable' and 'may be used

uninitialized' warnings.

ext/curl/interface.c

@@ -2441,7 +2441,7 @@ string_copy:
 
 			ph = HASH_OF(*zvalue);
 			if (!ph) {
-				char *name;
+				char *name = NULL;
 				switch (option) {
 					case CURLOPT_HTTPHEADER:
 						name = "CURLOPT_HTTPHEADER";

ext/intl/calendar/calendar_methods.cpp

@@ -184,7 +184,6 @@ U_CFUNC PHP_FUNCTION(intlcal_get_keyword_values_for_locale)
 
 U_CFUNC PHP_FUNCTION(intlcal_get_now)
 {
-	UErrorCode	status			= U_ZERO_ERROR;
 	intl_error_reset(NULL TSRMLS_CC);
 
 	if (zend_parse_parameters_none() == FAILURE) {

ext/intl/calendar/gregoriancalendar_methods.cpp

@@ -38,7 +38,6 @@ static inline GregorianCalendar *fetch_greg(Calendar_object *co) {
 
 static void _php_intlgregcal_constructor_body(INTERNAL_FUNCTION_PARAMETERS)
 {
-	zval		*object		= getThis();
 	zval		**tz_object	= NULL;
 	zval		**args_a[6] = {0},
 				***args		= &args_a[0];
@@ -84,7 +83,7 @@ static void _php_intlgregcal_constructor_body(INTERNAL_FUNCTION_PARAMETERS)
 	}
 	
 	// instantion of ICU object
-	GregorianCalendar *gcal;
+	GregorianCalendar *gcal = NULL;
 
 	if (variant <= 2) {
 		// From timezone and locale (0 to 2 arguments)

ext/intl/msgformat/msgformat_helpers.cpp

@@ -487,7 +487,7 @@ U_CFUNC void umsg_format_helper(MessageFormatter_object *mfo,
 				}
 			case Formattable::kLong:
 				{
-					int32_t tInt32;
+					int32_t tInt32 = 0;
 retry_klong:
 					if (Z_TYPE_PP(elem) == IS_DOUBLE) {
 						if (Z_DVAL_PP(elem) > (double)INT32_MAX ||
@@ -517,7 +517,7 @@ retry_klong:
 				}
 			case Formattable::kInt64:
 				{
-					int64_t tInt64;
+					int64_t tInt64 = 0;
 retry_kint64:
 					if (Z_TYPE_PP(elem) == IS_DOUBLE) {
 						if (Z_DVAL_PP(elem) > (double)U_INT64_MAX ||