msvcrt: Sign-compare warnings fix

[Andrew Talbot]

Changelog:
    msvcrt: Sign-compare warnings fix.

diff --git a/dlls/msvcrt/console.c b/dlls/msvcrt/console.c
index 21bcf16..267e0e1 100644
--- a/dlls/msvcrt/console.c
+++ b/dlls/msvcrt/console.c
@@ -121,7 +121,7 @@ int CDECL _getch(void)
     do {
       if (ReadConsoleInputA(MSVCRT_console_in, &ir, 1, &count))
       {
-          int i;
+          unsigned int i;
         /* Only interested in ASCII chars */
         if (ir.EventType == KEY_EVENT &&
             ir.Event.KeyEvent.bKeyDown)
diff --git a/dlls/msvcrt/except.c b/dlls/msvcrt/except.c
index 296c656..adcd18c 100644
--- a/dlls/msvcrt/except.c
+++ b/dlls/msvcrt/except.c
@@ -478,7 +478,8 @@ static LONG WINAPI msvcrt_exception_filter(struct _EXCEPTION_POINTERS *except)
         {
             if (handler != MSVCRT_SIG_IGN)
             {
-                int i, float_signal = _FPE_INVALID;
+                unsigned int i;
+                int float_signal = _FPE_INVALID;
 
                 sighandlers[MSVCRT_SIGFPE] = MSVCRT_SIG_DFL;
                 for (i = 0; i < sizeof(float_exception_map) /
diff --git a/dlls/msvcrt/file.c b/dlls/msvcrt/file.c
index c78e46c..7c0f74d 100644
--- a/dlls/msvcrt/file.c
+++ b/dlls/msvcrt/file.c
@@ -1686,7 +1686,7 @@ static int read_i(int fd, void *buf, unsigned int count)
     {
         if (MSVCRT_fdesc[fd].wxflag & WX_TEXT)
         {
-            int i;
+            DWORD i;
             /* in text mode, a ctrl-z signals EOF */
             for (i=0; i<num_read; i++)
             {
@@ -2281,7 +2281,8 @@ MSVCRT_wint_t CDECL MSVCRT_fgetwc(MSVCRT_FILE* file)
   if (!(MSVCRT_fdesc[file->_file].wxflag & WX_TEXT))
     {
       MSVCRT_wchar_t wc;
-      int i,j;
+      unsigned int i;
+      int j;
       char *chp, *wcp;
       wcp = (char *)&wc;
       for(i=0; i<sizeof(wc); i++)
@@ -2324,7 +2325,8 @@ MSVCRT_wint_t CDECL MSVCRT_fgetwc(MSVCRT_FILE* file)
 int CDECL MSVCRT__getw(MSVCRT_FILE* file)
 {
   char *ch;
-  int i, j, k;
+  int i, k;
+  unsigned int j;
   ch = (char *)&i;
   for (j=0; j<sizeof(int); j++) {
     k = MSVCRT_fgetc(file);
diff --git a/dlls/msvcrt/undname.c b/dlls/msvcrt/undname.c
index 1d9fae7..317d7d3 100644
--- a/dlls/msvcrt/undname.c
+++ b/dlls/msvcrt/undname.c
@@ -348,7 +348,7 @@ static char* get_args(struct parsed_symbol* sym, struct array* pmt_ref, BOOL z_t
     struct datatype_t   ct;
     struct array        arg_collect;
     char*               args_str = NULL;
-    int                 i;
+    unsigned int        i;
 
     str_array_init(&arg_collect);
 
diff --git a/dlls/msvcrt/wcs.c b/dlls/msvcrt/wcs.c
index 7eab20b..8cd843d 100644
--- a/dlls/msvcrt/wcs.c
+++ b/dlls/msvcrt/wcs.c
@@ -1034,7 +1034,7 @@ INT CDECL MSVCRT_iswxdigit( MSVCRT_wchar_t wc )
  */
 INT CDECL MSVCRT_wcscpy_s( MSVCRT_wchar_t* wcDest, MSVCRT_size_t numElement, const  MSVCRT_wchar_t *wcSrc)
 {
-    INT size = 0;
+    unsigned int size = 0;
 
     if(!wcDest || !numElement)
         return MSVCRT_EINVAL;
@@ -1067,7 +1067,7 @@ INT CDECL MSVCRT_wcscpy_s( MSVCRT_wchar_t* wcDest, MSVCRT_size_t numElement, con
 INT CDECL MSVCRT_wcsncpy_s( MSVCRT_wchar_t* wcDest, MSVCRT_size_t numElement, const MSVCRT_wchar_t *wcSrc,
                             MSVCRT_size_t count )
 {
-    INT size = 0;
+    unsigned int size = 0;
 
     if (!wcDest || !numElement)
         return MSVCRT_EINVAL;