Remove extraneous spaces from non-minified builds.

Former-commit-id: ec8e18d00884cab96031c061ed32002f41edc0e5

build.js

@@ -576,6 +576,8 @@
     return source
       // remove pseudo private properties
       .replace(/(?:(?:\s*\/\/.*)*\s*lodash\._[^=]+=.+\n)+/g, '\n')
+      // remove extraneous whitespace
+      .replace(/^ *\n/gm, '\n')
       // remove lines with just whitespace and semicolons
       .replace(/^ *;\n/gm, '')
       // consolidate multiple newlines

dist/lodash.compat.js

@@ -485,7 +485,6 @@
       (obj.bottom ) +
       ';\nreturn result';
 
-      
       return __p
     };
 

dist/lodash.js

@@ -367,7 +367,6 @@
       (obj.bottom ) +
       ';\nreturn result';
 
-      
       return __p
     };
 

dist/lodash.underscore.js

@@ -4092,7 +4092,6 @@
     return value;
   }
 
-  
   /**
    * Invokes `interceptor` with the `value` as the first argument, and then
    * returns `value`. The purpose of this method is to "tap into" a method chain,
@@ -4139,7 +4138,6 @@
     return this;
   }
 
-  
   /**
    * Produces the `toString` result of the wrapped value.
    *