Mollify GCC.

c++/src/kj/common.h

@@ -429,8 +429,8 @@ static constexpr MinValue_ minValue = MinValue_();
 //
 // `char` is not supported, but `signed char` and `unsigned char` are.
 
-inline double inf() { return 1.0 / 0.0; }
-inline double nan() { return 0.0 / 0.0; }
+inline float inf() { return 1.0f / 0.0f; }
+inline float nan() { return 0.0f / 0.0f; }
 
 // =======================================================================================
 // Useful fake containers

mega-test-quick.cfg

 linux-gcc-4.7      1704 ./super-test.sh tmpdir capnp-gcc-4.7 quick
 linux-gcc-4.8      1707 ./super-test.sh tmpdir capnp-gcc-4.8 quick gcc-4.8
-linux-clang        1724 ./super-test.sh tmpdir capnp-clang quick clang
+linux-clang        1745 ./super-test.sh tmpdir capnp-clang quick clang
 mac                 791 ./super-test.sh remote beat caffeinate quick
 cygwin              795 ./super-test.sh remote Kenton@flashman quick