hunspell: Changed signed char* to unsigned char*

third_party/hunspell/google.patch

Index: third_party/hunspell/google.patch
diff --git a/third_party/hunspell/google.patch b/third_party/hunspell/google.patch
index 0134ce144b949ab92435d602a46353d4ebc90907..47d561dd4c123999fcc745b8bfb6fd290232567f 100644
--- a/third_party/hunspell/google.patch
+++ b/third_party/hunspell/google.patch
@@ -1352,3 +1352,53 @@ diff -u -r1.5 suggestmgr.hxx
     int testsug(char** wlst, const char * candidate, int wl, int ns, int cpdsuggest,
       int * timer, clock_t * timelimit);
     int checkword(const char *, int, int, int *, clock_t *);
+diff --git a/third_party/hunspell/src/hunspell/csutil.cxx b/third_party/hunspell/src/hunspell/csutil.cxx
+index 2be9027..0f2267f 100644
+--- a/third_party/hunspell/src/hunspell/csutil.cxx
++++ b/third_party/hunspell/src/hunspell/csutil.cxx
+@@ -96,10 +96,10 @@ char * u16_u8(char * dest, int size, const w_char * src, int srclen) {
+ 
+ /* only UTF-16 (BMP) implementation */
+ int u8_u16(w_char * dest, int size, const char * src) {
+-    const signed char * u8 = (const signed char *)src;
++    const unsigned char * u8 = (const unsigned char*)src;
+     w_char * u2 = dest;
+     w_char * u2_max = u2 + size;
+-    
++
+     while ((u2 < u2_max) && *u8) {
+     switch ((*u8) & 0xf0) {
+         case 0x00:
+@@ -118,7 +118,7 @@ int u8_u16(w_char * dest, int size, const char * src) {
+         case 0x90:
+         case 0xa0:
+         case 0xb0: {
+-            HUNSPELL_WARNING(stderr, "UTF-8 encoding error. Unexpected continuation bytes in %ld. character position\n%s\n", static_cast<long>(u8 - (signed char *)src), src);    
++            HUNSPELL_WARNING(stderr, "UTF-8 encoding error. Unexpected continuation bytes in %ld. character position\n%s\n", static_cast<long>(u8 - (const unsigned char*)src), src);
+             u2->h = 0xff;
+             u2->l = 0xfd;
+             break;
+@@ -130,7 +130,7 @@ int u8_u16(w_char * dest, int size, const char * src) {
+                 u2->l = (*u8 << 6) + (*(u8+1) & 0x3f);
+                 u8++;
+             } else {
+-                HUNSPELL_WARNING(stderr, "UTF-8 encoding error. Missing continuation byte in %ld. character position:\n%s\n", static_cast<long>(u8 - (signed char *)src), src);
++                HUNSPELL_WARNING(stderr, "UTF-8 encoding error. Missing continuation byte in %ld. character position:\n%s\n", static_cast<long>(u8 - (const unsigned char*)src), src);
+                 u2->h = 0xff;
+                 u2->l = 0xfd;
+             }
+@@ -144,12 +144,12 @@ int u8_u16(w_char * dest, int size, const char * src) {
+                     u2->l = (*u8 << 6) + (*(u8+1) & 0x3f);
+                     u8++;
+                 } else {
+-                    HUNSPELL_WARNING(stderr, "UTF-8 encoding error. Missing continuation byte in %ld. character position:\n%s\n", static_cast<long>(u8 - (signed char *)src), src);
++                    HUNSPELL_WARNING(stderr, "UTF-8 encoding error. Missing continuation byte in %ld. character position:\n%s\n", static_cast<long>(u8 - (const unsigned char*)src), src);
+                     u2->h = 0xff;
+                     u2->l = 0xfd;
+                 }
+             } else {
+-                HUNSPELL_WARNING(stderr, "UTF-8 encoding error. Missing continuation byte in %ld. character position:\n%s\n", static_cast<long>(u8 - (signed char *)src), src);
++                HUNSPELL_WARNING(stderr, "UTF-8 encoding error. Missing continuation byte in %ld. character position:\n%s\n", static_cast<long>(u8 - (const unsigned char*)src), src);
+                 u2->h = 0xff;
+                 u2->l = 0xfd;
+             }