Fix typo in build script error

This was printing `Flag in rustc-flags has no valuein ...`

diff --git a/src/cargo/ops/cargo_rustc/custom_build.rs b/src/cargo/ops/cargo_rustc/custom_build.rs
index cb73d57b4c42d86f3b52ebbac3e826f49651c656..6791e66afe395a6ba1a27dd5cb17013b3238e28b 100644 (file)
--- a/src/cargo/ops/cargo_rustc/custom_build.rs
+++ b/src/cargo/ops/cargo_rustc/custom_build.rs
@@ -305,7 +305,7 @@ impl BuildOutput {
             }
             let value = match flags_iter.next() {
                 Some(v) => v,
-                None => return Err(human(format!("Flag in rustc-flags has no value\
+                None => return Err(human(format!("Flag in rustc-flags has no value \
                                                   in {}: `{}`",
                                                   whence, value)))
             };