fix strict aliasing issues

Patch by Przemysław Iskra (#3805)

code/ui/ui_syscalls.c

@@ -35,9 +35,9 @@ void dllEntry( intptr_t (QDECL *syscallptr)( intptr_t arg,... ) ) {
 }
 
 int PASSFLOAT( float x ) {
-	float	floatTemp;
-	floatTemp = x;
-	return *(int *)&floatTemp;
+	floatint_t fi;
+	fi.f = x;
+	return fi.i;
 }
 
 void trap_Print( const char *string ) {
@@ -65,9 +65,9 @@ void trap_Cvar_Set( const char *var_name, const char *value ) {
 }
 
 float trap_Cvar_VariableValue( const char *var_name ) {
-	int temp;
-	temp = syscall( UI_CVAR_VARIABLEVALUE, var_name );
-	return (*(float*)&temp);
+	floatint_t fi;
+	fi.i = syscall( UI_CVAR_VARIABLEVALUE, var_name );
+	return fi.f;
 }
 
 void trap_Cvar_VariableStringBuffer( const char *var_name, char *buffer, int bufsize ) {