Preprocessor: Evaluate INT_MIN % -1 to 0.

Test/cppIntMinOverNegativeOne.frag

@@ -1,3 +1,6 @@
 #if (-2147483648 / -1) != 0
 #error INT_MIN / -1 should yield 0, something went wrong.
+#endif
+#if (-2147483648 % -1) != 0
+#error INT_MIN % -1 should yield 0, something went wrong.
 #endif

glslang/MachineIndependent/preprocessor/Pp.cpp

@@ -352,7 +352,7 @@ namespace {
     int op_sub(int a, int b) { return a - b; }
     int op_mul(int a, int b) { return a * b; }
     int op_div(int a, int b) { return a == INT_MIN && b == -1 ? 0 : a / b; }
-    int op_mod(int a, int b) { return a % b; }
+    int op_mod(int a, int b) { return a == INT_MIN && b == -1 ? 0 : a % b; }
     int op_pos(int a) { return a; }
     int op_neg(int a) { return -a; }
     int op_cmpl(int a) { return ~a; }