wizard: fix warnings

.../Source/cmakewizard.cxx: In member function ‘virtual void cmakewizard::AskUser(const char*, cmCacheManager::CacheIterator&)’:
.../Source/cmakewizard.cxx:31:35: warning: conversion to ‘int’ from ‘long unsigned int’ may alter its value [-Wconversion]
   if(!fgets(buffer, sizeof(buffer)-1, stdin))
                                   ^
.../Source/cmakewizard.cxx: In member function ‘virtual bool cmakewizard::AskAdvanced()’:
.../Source/cmakewizard.cxx:70:35: warning: conversion to ‘int’ from ‘long unsigned int’ may alter its value [-Wconversion]
   if(!fgets(buffer, sizeof(buffer)-1, stdin))

The compiler is (partly) right here: sizeof() returns a size_t, which often is
bigger as as int as it is unsigned long or something similar. Add an explicit
cast to get rid of that warning here, the buffer has a size of 4KiB, so the
value will fit into an int on all sane platforms.

1 files changed, 2 insertions, 2 deletions

diff --git a/Source/cmakewizard.cxx b/Source/cmakewizard.cxx
index 749f669..8ac55d9 100644
--- a/Source/cmakewizard.cxx
+++ b/Source/cmakewizard.cxx
@@ -28,7 +28,7 @@ void cmakewizard::AskUser(const char* key,
   printf("Current Value: %s\n", iter.GetValue());
   printf("New Value (Enter to keep current value): ");
   char buffer[4096];
-  if(!fgets(buffer, sizeof(buffer)-1, stdin))
+  if(!fgets(buffer, static_cast<int>(sizeof(buffer) - 1), stdin))
     {
     buffer[0] = 0;
     }
@@ -67,7 +67,7 @@ bool cmakewizard::AskAdvanced()
 {
   printf("Would you like to see advanced options? [No]:");
   char buffer[4096];
-  if(!fgets(buffer, sizeof(buffer)-1, stdin))
+  if(!fgets(buffer, static_cast<int>(sizeof(buffer) - 1), stdin))
     {
     buffer[0] = 0;
     }