Typo.

Change-Id: I4d9ec6da1f02cc41643539c17ba34567ec95ba7b

build/org.eclipse.cdt.managedbuilder.core/src/org/eclipse/cdt/managedbuilder/internal/core/CommonBuilder.java

diff --git a/build/org.eclipse.cdt.managedbuilder.core/src/org/eclipse/cdt/managedbuilder/internal/core/CommonBuilder.java b/build/org.eclipse.cdt.managedbuilder.core/src/org/eclipse/cdt/managedbuilder/internal/core/CommonBuilder.java
index fb12dc5..da7db25 100644
--- a/build/org.eclipse.cdt.managedbuilder.core/src/org/eclipse/cdt/managedbuilder/internal/core/CommonBuilder.java
+++ b/build/org.eclipse.cdt.managedbuilder.core/src/org/eclipse/cdt/managedbuilder/internal/core/CommonBuilder.java
@@ -1038,7 +1038,7 @@
 	@Override
 	protected final void clean(IProgressMonitor monitor) throws CoreException {
 		throw new IllegalStateException(
-				"Unexpcted/incorrect call to old clean method. Client code must call clean(Map,IProgressMonitor)"); //$NON-NLS-1$
+				"Unexpected/incorrect call to old clean method. Client code must call clean(Map,IProgressMonitor)"); //$NON-NLS-1$
 	}
 
 	@Override