- Fixed possible uninitialized scalar variable usage (spotted by Coverity)

Author: felipensp

ext/mbstring/libmbfl/filters/mbfilter_iso2022jp_mobile.c

@@ -142,7 +142,7 @@ const struct mbfl_convert_vtbl vtbl_wchar_2022jp_kddi = {
 int
 mbfl_filt_conv_2022jp_mobile_wchar(int c, mbfl_convert_filter *filter)
 {
-	int c1, s, w, snd;
+	int c1, s, w, snd = 0;
 
 retry:
 	switch (filter->status & 0xf) {

ext/mbstring/libmbfl/filters/mbfilter_sjis_2004.c

@@ -134,7 +134,7 @@ int
 mbfl_filt_conv_jis2004_wchar(int c, mbfl_convert_filter *filter)
 {
 	int k;
-	int c1, c2, s, s1, s2, w = 0, w1;
+	int c1, c2, s, s1 = 0, s2 = 0, w = 0, w1;
 
 retry:
 	switch (filter->status & 0xf) {

ext/mbstring/libmbfl/filters/mbfilter_sjis_mobile.c

@@ -605,7 +605,7 @@ mbfilter_unicode2sjis_emoji_sb(int c, int *s1, mbfl_convert_filter *filter)
 int
 mbfl_filt_conv_sjis_mobile_wchar(int c, mbfl_convert_filter *filter)
 {
-	int c1, s, s1, s2, w;
+	int c1, s, s1 = 0, s2 = 0, w;
 	int snd = 0;
 
 retry:

ext/mbstring/libmbfl/mbfl/mbfilter.c

@@ -985,7 +985,7 @@ mbfl_strpos(
 {
 	int result;
 	mbfl_string _haystack_u8, _needle_u8;
-	const mbfl_string *haystack_u8, *needle_u8;
+	const mbfl_string *haystack_u8, *needle_u8 = NULL;
 	const unsigned char *u8_tbl;
 
 	if (haystack == NULL || haystack->val == NULL || needle == NULL || needle->val == NULL) {