Fix -Wimplicit-int-float-conversion warning

We're intentionally losing precision in this case, so add a cast.

googletest/googletest/include/gtest/gtest-printers.h:532:9: error:
implicit conversion from 'int32_t' (aka 'int') to 'float' may lose precision
[-Werror,-Wimplicit-int-float-conversion]
    if (static_cast<int32_t>(val * mulfor6 + 0.5) / mulfor6 == val) return 6;
        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~

googletest/googletest/include/gtest/gtest-printers.h:544:9: error:
implicit conversion from 'int32_t' (aka 'int') to 'float' may lose precision
[-Werror,-Wimplicit-int-float-conversion]
    if (static_cast<int32_t>(val / divfor6 + 0.5) * divfor6 == val) return 6;
        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~

PiperOrigin-RevId: 502646042
Change-Id: I05989ee42675b531a9907616c9582a5a7c77bed6

googletest/include/gtest/gtest-printers.h

@@ -529,7 +529,10 @@ int AppropriateResolution(FloatType val) {
     } else if (val >= 0.0001) {
       mulfor6 = 1e9;
     }
-    if (static_cast<int32_t>(val * mulfor6 + 0.5) / mulfor6 == val) return 6;
+    if (static_cast<float>(static_cast<int32_t>(val * mulfor6 + 0.5)) /
+            mulfor6 ==
+        val)
+      return 6;
   } else if (val < 1e10) {
     FloatType divfor6 = 1.0;
     if (val >= 1e9) {  // 1,000,000,000 to 9,999,999,999
@@ -541,7 +544,10 @@ int AppropriateResolution(FloatType val) {
     } else if (val >= 1e6) {  // 1,000,000 to 9,999,999
       divfor6 = 10;
     }
-    if (static_cast<int32_t>(val / divfor6 + 0.5) * divfor6 == val) return 6;
+    if (static_cast<float>(static_cast<int32_t>(val / divfor6 + 0.5)) *
+            divfor6 ==
+        val)
+      return 6;
   }
   return full;
 }