cmd/cgo: delete double space in comment

delete double space from comment

Change-Id: I71af5c1149941575016f79a91269f128b1fc16af
GitHub-Last-Rev: aba8874bd362d05d6c29c8647049369dfcd796f5
GitHub-Pull-Request: golang/go#23851
Reviewed-on: https://go-review.googlesource.com/94415Reviewed-by: Ian Lance Taylor <iant@golang.org>

src/cmd/cgo/gcc.go

@@ -2701,7 +2701,7 @@ func (c *typeConv) badJNI(dt *dwarf.TypedefType) bool {
 }
 
 // jniTypes maps from JNI types that we want to be uintptrs, to the underlying type to which
-// they are mapped.  The base "jobject" maps to the empty string.
+// they are mapped. The base "jobject" maps to the empty string.
 var jniTypes = map[string]string{
 	"jobject":       "",
 	"jclass":        "jobject",